feat: Refactor template handling, improve scheduler functions, and add timezone utilities

- Moved Jinja2 template setup to a shared configuration file (templates_config.py) for consistent usage across routers.
- Introduced timezone utilities in a new module (timezone.py) to handle UTC to local time conversions and formatting.
- Updated all relevant routers to use the new shared template configuration and timezone filters.
- Enhanced templates to utilize local time formatting for various datetime fields, improving user experience with timezone awareness.

backend/main.py

@@ -58,8 +58,8 @@ app.add_middleware(
 # Mount static files
 app.mount("/static", StaticFiles(directory="backend/static"), name="static")
 
-# Setup Jinja2 templates
+# Use shared templates configuration with timezone filters
-templates = Jinja2Templates(directory="templates")
+from backend.templates_config import templates
 
 # Add custom context processor to inject environment variable into all templates
 @app.middleware("http")

backend/models.py

@@ -363,13 +363,14 @@ class Alert(Base):
     - device_offline: Device became unreachable
     - device_online: Device came back online
     - schedule_failed: Scheduled action failed to execute
+    - schedule_completed: Scheduled action completed successfully
     """
     __tablename__ = "alerts"
 
     id = Column(String, primary_key=True, index=True)  # UUID
 
     # Alert classification
-    alert_type = Column(String, nullable=False)  # "device_offline" | "device_online" | "schedule_failed"
+    alert_type = Column(String, nullable=False)  # "device_offline" | "device_online" | "schedule_failed" | "schedule_completed"
     severity = Column(String, default="warning")  # "info" | "warning" | "critical"
 
     # Related entities (nullable - may not all apply)

backend/routers/alerts.py

@@ -5,7 +5,6 @@ API endpoints for managing in-app alerts.
 """
 
 from fastapi import APIRouter, Request, Depends, HTTPException, Query
-from fastapi.templating import Jinja2Templates
 from fastapi.responses import HTMLResponse, JSONResponse
 from sqlalchemy.orm import Session
 from typing import Optional
@@ -14,9 +13,9 @@ from datetime import datetime, timedelta
 from backend.database import get_db
 from backend.models import Alert, RosterUnit
 from backend.services.alert_service import get_alert_service
+from backend.templates_config import templates
 
 router = APIRouter(prefix="/api/alerts", tags=["alerts"])
-templates = Jinja2Templates(directory="templates")
 
 
 # ============================================================================

backend/routers/dashboard.py

@@ -1,10 +1,9 @@
 from fastapi import APIRouter, Request, Depends
-from fastapi.templating import Jinja2Templates
 
 from backend.services.snapshot import emit_status_snapshot
+from backend.templates_config import templates
 
 router = APIRouter()
-templates = Jinja2Templates(directory="templates")
 
 
 @router.get("/dashboard/active")

backend/routers/project_locations.py

@@ -6,7 +6,6 @@ and unit assignments within projects.
 """
 
 from fastapi import APIRouter, Request, Depends, HTTPException, Query
-from fastapi.templating import Jinja2Templates
 from fastapi.responses import HTMLResponse, JSONResponse
 from sqlalchemy.orm import Session
 from sqlalchemy import and_, or_
@@ -24,9 +23,9 @@ from backend.models import (
     RosterUnit,
     RecordingSession,
 )
+from backend.templates_config import templates
 
 router = APIRouter(prefix="/api/projects/{project_id}", tags=["project-locations"])
-templates = Jinja2Templates(directory="templates")
 
 
 # ============================================================================

backend/routers/projects.py

@@ -9,17 +9,19 @@ Provides API endpoints for the Projects system:
 """
 
 from fastapi import APIRouter, Request, Depends, HTTPException, Query
-from fastapi.templating import Jinja2Templates
 from fastapi.responses import HTMLResponse, JSONResponse, StreamingResponse
 from sqlalchemy.orm import Session
 from sqlalchemy import func, and_
 from datetime import datetime, timedelta
 from typing import Optional
+from collections import OrderedDict
 import uuid
 import json
 import logging
 import io
 
+from backend.utils.timezone import utc_to_local, format_local_datetime
+
 from backend.database import get_db
 from backend.models import (
     Project,
@@ -31,9 +33,9 @@ from backend.models import (
     RecurringSchedule,
     RosterUnit,
 )
+from backend.templates_config import templates
 
 router = APIRouter(prefix="/api/projects", tags=["projects"])
-templates = Jinja2Templates(directory="templates")
 logger = logging.getLogger(__name__)
 
 
@@ -461,16 +463,37 @@ async def get_project_schedules(
     if status:
         query = query.filter(ScheduledAction.execution_status == status)
 
+    # For pending actions, show soonest first (ascending)
+    # For completed/failed, show most recent first (descending)
+    if status == "pending":
+        schedules = query.order_by(ScheduledAction.scheduled_time.asc()).all()
+    else:
         schedules = query.order_by(ScheduledAction.scheduled_time.desc()).all()
 
-    # Enrich with location details
+    # Enrich with location details and group by date
-    schedules_data = []
+    schedules_by_date = OrderedDict()
     for schedule in schedules:
         location = None
         if schedule.location_id:
             location = db.query(MonitoringLocation).filter_by(id=schedule.location_id).first()
 
-        schedules_data.append({
+        # Get local date for grouping
+        if schedule.scheduled_time:
+            local_dt = utc_to_local(schedule.scheduled_time)
+            date_key = local_dt.strftime("%Y-%m-%d")
+            date_display = local_dt.strftime("%A, %B %d, %Y")  # "Wednesday, January 22, 2026"
+        else:
+            date_key = "unknown"
+            date_display = "Unknown Date"
+
+        if date_key not in schedules_by_date:
+            schedules_by_date[date_key] = {
+                "date_display": date_display,
+                "date_key": date_key,
+                "actions": [],
+            }
+
+        schedules_by_date[date_key]["actions"].append({
             "schedule": schedule,
             "location": location,
         })
@@ -478,7 +501,84 @@ async def get_project_schedules(
     return templates.TemplateResponse("partials/projects/schedule_list.html", {
         "request": request,
         "project_id": project_id,
-        "schedules": schedules_data,
+        "schedules_by_date": schedules_by_date,
+    })
+
+
+@router.post("/{project_id}/schedules/{schedule_id}/execute")
+async def execute_scheduled_action(
+    project_id: str,
+    schedule_id: str,
+    db: Session = Depends(get_db),
+):
+    """
+    Manually execute a scheduled action now.
+    """
+    from backend.services.scheduler import get_scheduler
+
+    action = db.query(ScheduledAction).filter_by(
+        id=schedule_id,
+        project_id=project_id,
+    ).first()
+
+    if not action:
+        raise HTTPException(status_code=404, detail="Action not found")
+
+    if action.execution_status != "pending":
+        raise HTTPException(
+            status_code=400,
+            detail=f"Action is not pending (status: {action.execution_status})",
+        )
+
+    # Execute via scheduler service
+    scheduler = get_scheduler()
+    result = await scheduler.execute_action_by_id(schedule_id)
+
+    # Refresh from DB to get updated status
+    db.refresh(action)
+
+    return JSONResponse({
+        "success": result.get("success", False),
+        "message": f"Action executed: {action.action_type}",
+        "result": result,
+        "action": {
+            "id": action.id,
+            "execution_status": action.execution_status,
+            "executed_at": action.executed_at.isoformat() if action.executed_at else None,
+            "error_message": action.error_message,
+        },
+    })
+
+
+@router.post("/{project_id}/schedules/{schedule_id}/cancel")
+async def cancel_scheduled_action(
+    project_id: str,
+    schedule_id: str,
+    db: Session = Depends(get_db),
+):
+    """
+    Cancel a pending scheduled action.
+    """
+    action = db.query(ScheduledAction).filter_by(
+        id=schedule_id,
+        project_id=project_id,
+    ).first()
+
+    if not action:
+        raise HTTPException(status_code=404, detail="Action not found")
+
+    if action.execution_status != "pending":
+        raise HTTPException(
+            status_code=400,
+            detail=f"Can only cancel pending actions (status: {action.execution_status})",
+        )
+
+    action.execution_status = "cancelled"
+    db.commit()
+
+    return JSONResponse({
+        "success": True,
+        "message": "Action cancelled successfully",
     })
 
 

backend/routers/recurring_schedules.py

@@ -5,7 +5,6 @@ API endpoints for managing recurring monitoring schedules.
 """
 
 from fastapi import APIRouter, Request, Depends, HTTPException, Query
-from fastapi.templating import Jinja2Templates
 from fastapi.responses import HTMLResponse, JSONResponse
 from sqlalchemy.orm import Session
 from typing import Optional
@@ -15,9 +14,9 @@ import json
 from backend.database import get_db
 from backend.models import RecurringSchedule, MonitoringLocation, Project, RosterUnit
 from backend.services.recurring_schedule_service import get_recurring_schedule_service
+from backend.templates_config import templates
 
 router = APIRouter(prefix="/api/projects/{project_id}/recurring-schedules", tags=["recurring-schedules"])
-templates = Jinja2Templates(directory="templates")
 
 
 # ============================================================================
@@ -209,17 +208,25 @@ async def create_recurring_schedule(
             auto_increment_index=data.get("auto_increment_index", True),
             timezone=data.get("timezone", "America/New_York"),
         )
+
+        # Generate actions immediately so they appear right away
+        generated_actions = service.generate_actions_for_schedule(schedule, horizon_days=7)
+
         created_schedules.append({
             "schedule_id": schedule.id,
             "location_id": location.id,
             "location_name": location.name,
+            "actions_generated": len(generated_actions),
         })
 
+    total_actions = sum(s.get("actions_generated", 0) for s in created_schedules)
+
     return JSONResponse({
         "success": True,
         "schedules": created_schedules,
         "count": len(created_schedules),
-        "message": f"Created {len(created_schedules)} recurring schedule(s)",
+        "actions_generated": total_actions,
+        "message": f"Created {len(created_schedules)} recurring schedule(s) with {total_actions} upcoming actions",
     })
 
 

backend/routers/scheduler.py

@@ -5,7 +5,6 @@ Handles scheduled actions for automated recording control.
 """
 
 from fastapi import APIRouter, Request, Depends, HTTPException, Query
-from fastapi.templating import Jinja2Templates
 from fastapi.responses import HTMLResponse, JSONResponse
 from sqlalchemy.orm import Session
 from sqlalchemy import and_, or_
@@ -23,9 +22,9 @@ from backend.models import (
     RosterUnit,
 )
 from backend.services.scheduler import get_scheduler
+from backend.templates_config import templates
 
 router = APIRouter(prefix="/api/projects/{project_id}/scheduler", tags=["scheduler"])
-templates = Jinja2Templates(directory="templates")
 
 
 # ============================================================================

backend/routers/seismo_dashboard.py

@@ -5,13 +5,12 @@ Provides endpoints for the seismograph-specific dashboard
 
 from fastapi import APIRouter, Request, Depends, Query
 from fastapi.responses import HTMLResponse
-from fastapi.templating import Jinja2Templates
 from sqlalchemy.orm import Session
 from backend.database import get_db
 from backend.models import RosterUnit
+from backend.templates_config import templates
 
 router = APIRouter(prefix="/api/seismo-dashboard", tags=["seismo-dashboard"])
-templates = Jinja2Templates(directory="templates")
 
 
 @router.get("/stats", response_class=HTMLResponse)

backend/routers/slm_dashboard.py

@@ -5,7 +5,6 @@ Provides API endpoints for the Sound Level Meters dashboard page.
 """
 
 from fastapi import APIRouter, Request, Depends, Query
-from fastapi.templating import Jinja2Templates
 from fastapi.responses import HTMLResponse
 from sqlalchemy.orm import Session
 from sqlalchemy import func
@@ -18,11 +17,11 @@ import os
 from backend.database import get_db
 from backend.models import RosterUnit
 from backend.routers.roster_edit import sync_slm_to_slmm_cache
+from backend.templates_config import templates
 
 logger = logging.getLogger(__name__)
 
 router = APIRouter(prefix="/api/slm-dashboard", tags=["slm-dashboard"])
-templates = Jinja2Templates(directory="templates")
 
 # SLMM backend URL - configurable via environment variable
 SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://localhost:8100")

backend/routers/slm_ui.py

@@ -6,7 +6,6 @@ Provides endpoints for SLM dashboard cards, detail pages, and real-time data.
 
 from fastapi import APIRouter, Depends, HTTPException, Request
 from fastapi.responses import HTMLResponse
-from fastapi.templating import Jinja2Templates
 from sqlalchemy.orm import Session
 from datetime import datetime
 import httpx
@@ -15,11 +14,11 @@ import os
 
 from backend.database import get_db
 from backend.models import RosterUnit
+from backend.templates_config import templates
 
 logger = logging.getLogger(__name__)
 
 router = APIRouter(prefix="/slm", tags=["slm-ui"])
-templates = Jinja2Templates(directory="templates")
 
 SLMM_BASE_URL = os.getenv("SLMM_BASE_URL", "http://172.19.0.1:8100")
 

backend/services/alert_service.py

@@ -221,6 +221,61 @@ class AlertService:
             expires_hours=24,
         )
 
+    def create_schedule_completed_alert(
+        self,
+        schedule_id: str,
+        action_type: str,
+        unit_id: str = None,
+        project_id: str = None,
+        location_id: str = None,
+        metadata: dict = None,
+    ) -> Alert:
+        """
+        Create alert when a scheduled action completes successfully.
+
+        Args:
+            schedule_id: The ScheduledAction ID
+            action_type: start, stop, download
+            unit_id: Related unit
+            project_id: Related project
+            location_id: Related location
+            metadata: Additional info (e.g., downloaded folder, index numbers)
+
+        Returns:
+            Created Alert
+        """
+        # Build descriptive message based on action type and metadata
+        if action_type == "stop" and metadata:
+            download_folder = metadata.get("downloaded_folder")
+            download_success = metadata.get("download_success", False)
+            if download_success and download_folder:
+                message = f"Measurement stopped and data downloaded ({download_folder})"
+            elif download_success is False and metadata.get("download_attempted"):
+                message = "Measurement stopped but download failed"
+            else:
+                message = "Measurement stopped successfully"
+        elif action_type == "start" and metadata:
+            new_index = metadata.get("new_index")
+            if new_index is not None:
+                message = f"Measurement started (index {new_index:04d})"
+            else:
+                message = "Measurement started successfully"
+        else:
+            message = f"Scheduled {action_type} completed successfully"
+
+        return self.create_alert(
+            alert_type="schedule_completed",
+            title=f"Scheduled {action_type} completed",
+            message=message,
+            severity="info",
+            unit_id=unit_id,
+            project_id=project_id,
+            location_id=location_id,
+            schedule_id=schedule_id,
+            metadata={"action_type": action_type, **(metadata or {})},
+            expires_hours=12,  # Info alerts expire quickly
+        )
+
     def get_active_alerts(
         self,
         project_id: str = None,

backend/services/device_controller.py

@@ -403,6 +403,87 @@ class DeviceController:
         else:
             raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
 
+    # ========================================================================
+    # Cycle Commands (for scheduled automation)
+    # ========================================================================
+
+    async def start_cycle(
+        self,
+        unit_id: str,
+        device_type: str,
+        sync_clock: bool = True,
+    ) -> Dict[str, Any]:
+        """
+        Execute complete start cycle for scheduled automation.
+
+        This handles the full pre-recording workflow:
+        1. Sync device clock to server time
+        2. Find next safe index (with overwrite protection)
+        3. Start measurement
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "slm" | "seismograph"
+            sync_clock: Whether to sync device clock to server time
+
+        Returns:
+            Response dict from device module
+        """
+        if device_type == "slm":
+            try:
+                return await self.slmm_client.start_cycle(unit_id, sync_clock)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph start cycle not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
+    async def stop_cycle(
+        self,
+        unit_id: str,
+        device_type: str,
+        download: bool = True,
+    ) -> Dict[str, Any]:
+        """
+        Execute complete stop cycle for scheduled automation.
+
+        This handles the full post-recording workflow:
+        1. Stop measurement
+        2. Enable FTP
+        3. Download measurement folder
+        4. Verify download
+
+        Args:
+            unit_id: Unit identifier
+            device_type: "slm" | "seismograph"
+            download: Whether to download measurement data
+
+        Returns:
+            Response dict from device module
+        """
+        if device_type == "slm":
+            try:
+                return await self.slmm_client.stop_cycle(unit_id, download)
+            except SLMMClientError as e:
+                raise DeviceControllerError(f"SLMM error: {str(e)}")
+
+        elif device_type == "seismograph":
+            return {
+                "status": "not_implemented",
+                "message": "Seismograph stop cycle not yet implemented",
+                "unit_id": unit_id,
+            }
+
+        else:
+            raise UnsupportedDeviceTypeError(f"Unsupported device type: {device_type}")
+
     # ========================================================================
     # Health Check
     # ========================================================================

backend/services/recurring_schedule_service.py

@@ -146,13 +146,22 @@ class RecurringScheduleService:
             return False
 
         # Delete pending generated actions for this schedule
-        # Note: We don't have recurring_schedule_id field yet, so we can't clean up
+        # The schedule_id is stored in the notes field as JSON
-        # generated actions. This is fine for now.
+        pending_actions = self.db.query(ScheduledAction).filter(
+            and_(
+                ScheduledAction.execution_status == "pending",
+                ScheduledAction.notes.like(f'%"schedule_id": "{schedule_id}"%'),
+            )
+        ).all()
+
+        deleted_count = len(pending_actions)
+        for action in pending_actions:
+            self.db.delete(action)
 
         self.db.delete(schedule)
         self.db.commit()
 
-        logger.info(f"Deleted recurring schedule: {schedule.name}")
+        logger.info(f"Deleted recurring schedule: {schedule.name} (and {deleted_count} pending actions)")
         return True
 
     def enable_schedule(self, schedule_id: str) -> Optional[RecurringSchedule]:

backend/services/scheduler.py

@@ -23,6 +23,7 @@ from sqlalchemy import and_
 from backend.database import SessionLocal
 from backend.models import ScheduledAction, RecordingSession, MonitoringLocation, Project, RecurringSchedule
 from backend.services.device_controller import get_device_controller, DeviceControllerError
+from backend.services.alert_service import get_alert_service
 import uuid
 
 logger = logging.getLogger(__name__)
@@ -197,6 +198,21 @@ class SchedulerService:
 
             print(f"✓ Action {action.id} completed successfully")
 
+            # Create success alert
+            try:
+                alert_service = get_alert_service(db)
+                alert_metadata = response.get("cycle_response", {}) if isinstance(response, dict) else {}
+                alert_service.create_schedule_completed_alert(
+                    schedule_id=action.id,
+                    action_type=action.action_type,
+                    unit_id=unit_id,
+                    project_id=action.project_id,
+                    location_id=action.location_id,
+                    metadata=alert_metadata,
+                )
+            except Exception as alert_err:
+                logger.warning(f"Failed to create success alert: {alert_err}")
+
         except Exception as e:
             # Mark action as failed
             action.execution_status = "failed"
@@ -207,6 +223,20 @@ class SchedulerService:
 
             print(f"✗ Action {action.id} failed: {e}")
 
+            # Create failure alert
+            try:
+                alert_service = get_alert_service(db)
+                alert_service.create_schedule_failed_alert(
+                    schedule_id=action.id,
+                    action_type=action.action_type,
+                    unit_id=unit_id if 'unit_id' in dir() else action.unit_id,
+                    error_message=str(e),
+                    project_id=action.project_id,
+                    location_id=action.location_id,
+                )
+            except Exception as alert_err:
+                logger.warning(f"Failed to create failure alert: {alert_err}")
+
         return result
 
     async def _execute_start(
@@ -215,35 +245,19 @@ class SchedulerService:
         unit_id: str,
         db: Session,
     ) -> Dict[str, Any]:
-        """Execute a 'start' action."""
+        """Execute a 'start' action using the start_cycle command.
-        # Parse action notes for automation settings
-        auto_increment_index = False
-        try:
-            if action.notes:
-                notes_data = json.loads(action.notes)
-                auto_increment_index = notes_data.get("auto_increment_index", False)
-        except json.JSONDecodeError:
-            pass  # Notes is plain text, not JSON
 
-        # If auto_increment_index is enabled, increment the store index before starting
+        start_cycle handles:
-        increment_response = None
+        1. Sync device clock to server time
-        if auto_increment_index and action.device_type == "slm":
+        2. Find next safe index (with overwrite protection)
-            try:
+        3. Start measurement
-                logger.info(f"Auto-incrementing store index for unit {unit_id}")
+        """
-                increment_response = await self.device_controller.increment_index(
+        # Execute the full start cycle via device controller
+        # SLMM handles clock sync, index increment, and start
+        cycle_response = await self.device_controller.start_cycle(
             unit_id,
             action.device_type,
-                )
+            sync_clock=True,
-                logger.info(f"Index incremented: {increment_response}")
-            except Exception as e:
-                logger.warning(f"Failed to increment index for {unit_id}: {e}")
-                # Continue with start anyway - don't fail the whole action
-
-        # Start recording via device controller
-        response = await self.device_controller.start_recording(
-            unit_id,
-            action.device_type,
-            config={},
         )
 
         # Create recording session
@@ -257,8 +271,7 @@ class SchedulerService:
             status="recording",
             session_metadata=json.dumps({
                 "scheduled_action_id": action.id,
-                "auto_increment_index": auto_increment_index,
+                "cycle_response": cycle_response,
-                "increment_response": increment_response,
             }),
         )
         db.add(session)
@@ -266,9 +279,7 @@ class SchedulerService:
         return {
             "status": "started",
             "session_id": session.id,
-            "device_response": response,
+            "cycle_response": cycle_response,
-            "index_incremented": auto_increment_index,
-            "increment_response": increment_response,
         }
 
     async def _execute_stop(
@@ -277,11 +288,29 @@ class SchedulerService:
         unit_id: str,
         db: Session,
     ) -> Dict[str, Any]:
-        """Execute a 'stop' action."""
+        """Execute a 'stop' action using the stop_cycle command.
-        # Stop recording via device controller
+
-        response = await self.device_controller.stop_recording(
+        stop_cycle handles:
+        1. Stop measurement
+        2. Enable FTP
+        3. Download measurement folder
+        4. Verify download
+        """
+        # Parse notes for download preference
+        include_download = True
+        try:
+            if action.notes:
+                notes_data = json.loads(action.notes)
+                include_download = notes_data.get("include_download", True)
+        except json.JSONDecodeError:
+            pass  # Notes is plain text, not JSON
+
+        # Execute the full stop cycle via device controller
+        # SLMM handles stop, FTP enable, and download
+        cycle_response = await self.device_controller.stop_cycle(
             unit_id,
             action.device_type,
+            download=include_download,
         )
 
         # Find and update the active recording session
@@ -299,11 +328,20 @@ class SchedulerService:
             active_session.duration_seconds = int(
                 (active_session.stopped_at - active_session.started_at).total_seconds()
             )
+            # Store download info in session metadata
+            if cycle_response.get("download_success"):
+                try:
+                    metadata = json.loads(active_session.session_metadata or "{}")
+                    metadata["downloaded_folder"] = cycle_response.get("downloaded_folder")
+                    metadata["local_path"] = cycle_response.get("local_path")
+                    active_session.session_metadata = json.dumps(metadata)
+                except json.JSONDecodeError:
+                    pass
 
         return {
             "status": "stopped",
             "session_id": active_session.id if active_session else None,
-            "device_response": response,
+            "cycle_response": cycle_response,
         }
 
     async def _execute_download(

backend/services/slmm_client.py

@@ -9,13 +9,14 @@ that handles TCP/FTP communication with Rion NL-43/NL-53 devices.
 """
 
 import httpx
+import os
 from typing import Optional, Dict, Any, List
 from datetime import datetime
 import json
 
 
-# SLMM backend base URLs
+# SLMM backend base URLs - use environment variable if set (for Docker)
-SLMM_BASE_URL = "http://localhost:8100"
+SLMM_BASE_URL = os.environ.get("SLMM_BASE_URL", "http://localhost:8100")
 SLMM_API_BASE = f"{SLMM_BASE_URL}/api/nl43"
 
 
@@ -505,6 +506,68 @@ class SLMMClient:
         }
         return await self._request("POST", f"/{unit_id}/ftp/download", data=data)
 
+    # ========================================================================
+    # Cycle Commands (for scheduled automation)
+    # ========================================================================
+
+    async def start_cycle(
+        self,
+        unit_id: str,
+        sync_clock: bool = True,
+    ) -> Dict[str, Any]:
+        """
+        Execute complete start cycle on device via SLMM.
+
+        This handles the full pre-recording workflow:
+        1. Sync device clock to server time
+        2. Find next safe index (with overwrite protection)
+        3. Start measurement
+
+        Args:
+            unit_id: Unit identifier
+            sync_clock: Whether to sync device clock to server time
+
+        Returns:
+            Dict with clock_synced, old_index, new_index, started, etc.
+        """
+        return await self._request(
+            "POST",
+            f"/{unit_id}/start-cycle",
+            data={"sync_clock": sync_clock},
+        )
+
+    async def stop_cycle(
+        self,
+        unit_id: str,
+        download: bool = True,
+        download_path: Optional[str] = None,
+    ) -> Dict[str, Any]:
+        """
+        Execute complete stop cycle on device via SLMM.
+
+        This handles the full post-recording workflow:
+        1. Stop measurement
+        2. Enable FTP
+        3. Download measurement folder (if download=True)
+        4. Verify download
+
+        Args:
+            unit_id: Unit identifier
+            download: Whether to download measurement data
+            download_path: Custom path for downloaded ZIP (optional)
+
+        Returns:
+            Dict with stopped, ftp_enabled, download_success, local_path, etc.
+        """
+        data = {"download": download}
+        if download_path:
+            data["download_path"] = download_path
+        return await self._request(
+            "POST",
+            f"/{unit_id}/stop-cycle",
+            data=data,
+        )
+
     # ========================================================================
     # Polling Status (for device monitoring/alerts)
     # ========================================================================

backend/templates_config.py

@@ -0,0 +1,39 @@
+"""
+Shared Jinja2 templates configuration.
+
+All routers should import `templates` from this module to get consistent
+filter and global function registration.
+"""
+
+from fastapi.templating import Jinja2Templates
+
+# Import timezone utilities
+from backend.utils.timezone import (
+    format_local_datetime, format_local_time,
+    get_user_timezone, get_timezone_abbreviation
+)
+
+
+def jinja_local_datetime(dt, fmt="%Y-%m-%d %H:%M"):
+    """Jinja filter to convert UTC datetime to local timezone."""
+    return format_local_datetime(dt, fmt)
+
+
+def jinja_local_time(dt):
+    """Jinja filter to format time in local timezone."""
+    return format_local_time(dt)
+
+
+def jinja_timezone_abbr():
+    """Jinja global to get current timezone abbreviation."""
+    return get_timezone_abbreviation()
+
+
+# Create templates instance
+templates = Jinja2Templates(directory="templates")
+
+# Register Jinja filters and globals
+templates.env.filters["local_datetime"] = jinja_local_datetime
+templates.env.filters["local_time"] = jinja_local_time
+templates.env.globals["timezone_abbr"] = jinja_timezone_abbr
+templates.env.globals["get_user_timezone"] = get_user_timezone

backend/utils/__init__.py

@@ -0,0 +1 @@
+# Utils package

backend/utils/timezone.py

@@ -0,0 +1,173 @@
+"""
+Timezone utilities for Terra-View.
+
+Provides consistent timezone handling throughout the application.
+All database times are stored in UTC; this module converts for display.
+"""
+
+from datetime import datetime
+from zoneinfo import ZoneInfo
+from typing import Optional
+
+from backend.database import SessionLocal
+from backend.models import UserPreferences
+
+
+# Default timezone if none set
+DEFAULT_TIMEZONE = "America/New_York"
+
+
+def get_user_timezone() -> str:
+    """
+    Get the user's configured timezone from preferences.
+
+    Returns:
+        Timezone string (e.g., "America/New_York")
+    """
+    db = SessionLocal()
+    try:
+        prefs = db.query(UserPreferences).filter_by(id=1).first()
+        if prefs and prefs.timezone:
+            return prefs.timezone
+        return DEFAULT_TIMEZONE
+    finally:
+        db.close()
+
+
+def get_timezone_info(tz_name: str = None) -> ZoneInfo:
+    """
+    Get ZoneInfo object for the specified or user's timezone.
+
+    Args:
+        tz_name: Timezone name, or None to use user preference
+
+    Returns:
+        ZoneInfo object
+    """
+    if tz_name is None:
+        tz_name = get_user_timezone()
+    try:
+        return ZoneInfo(tz_name)
+    except Exception:
+        return ZoneInfo(DEFAULT_TIMEZONE)
+
+
+def utc_to_local(dt: datetime, tz_name: str = None) -> datetime:
+    """
+    Convert a UTC datetime to local timezone.
+
+    Args:
+        dt: Datetime in UTC (naive or aware)
+        tz_name: Target timezone, or None to use user preference
+
+    Returns:
+        Datetime in local timezone
+    """
+    if dt is None:
+        return None
+
+    tz = get_timezone_info(tz_name)
+
+    # Assume naive datetime is UTC
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=ZoneInfo("UTC"))
+
+    return dt.astimezone(tz)
+
+
+def local_to_utc(dt: datetime, tz_name: str = None) -> datetime:
+    """
+    Convert a local datetime to UTC.
+
+    Args:
+        dt: Datetime in local timezone (naive or aware)
+        tz_name: Source timezone, or None to use user preference
+
+    Returns:
+        Datetime in UTC (naive, for database storage)
+    """
+    if dt is None:
+        return None
+
+    tz = get_timezone_info(tz_name)
+
+    # Assume naive datetime is in local timezone
+    if dt.tzinfo is None:
+        dt = dt.replace(tzinfo=tz)
+
+    # Convert to UTC and strip tzinfo for database storage
+    return dt.astimezone(ZoneInfo("UTC")).replace(tzinfo=None)
+
+
+def format_local_datetime(dt: datetime, fmt: str = "%Y-%m-%d %H:%M", tz_name: str = None) -> str:
+    """
+    Format a UTC datetime as local time string.
+
+    Args:
+        dt: Datetime in UTC
+        fmt: strftime format string
+        tz_name: Target timezone, or None to use user preference
+
+    Returns:
+        Formatted datetime string in local time
+    """
+    if dt is None:
+        return "N/A"
+
+    local_dt = utc_to_local(dt, tz_name)
+    return local_dt.strftime(fmt)
+
+
+def format_local_time(dt: datetime, tz_name: str = None) -> str:
+    """
+    Format a UTC datetime as local time (HH:MM format).
+
+    Args:
+        dt: Datetime in UTC
+        tz_name: Target timezone
+
+    Returns:
+        Time string in HH:MM format
+    """
+    return format_local_datetime(dt, "%H:%M", tz_name)
+
+
+def format_local_date(dt: datetime, tz_name: str = None) -> str:
+    """
+    Format a UTC datetime as local date (YYYY-MM-DD format).
+
+    Args:
+        dt: Datetime in UTC
+        tz_name: Target timezone
+
+    Returns:
+        Date string
+    """
+    return format_local_datetime(dt, "%Y-%m-%d", tz_name)
+
+
+def get_timezone_abbreviation(tz_name: str = None) -> str:
+    """
+    Get the abbreviation for a timezone (e.g., EST, EDT, PST).
+
+    Args:
+        tz_name: Timezone name, or None to use user preference
+
+    Returns:
+        Timezone abbreviation
+    """
+    tz = get_timezone_info(tz_name)
+    now = datetime.now(tz)
+    return now.strftime("%Z")
+
+
+# Common US timezone choices for settings dropdown
+TIMEZONE_CHOICES = [
+    ("America/New_York", "Eastern Time (ET)"),
+    ("America/Chicago", "Central Time (CT)"),
+    ("America/Denver", "Mountain Time (MT)"),
+    ("America/Los_Angeles", "Pacific Time (PT)"),
+    ("America/Anchorage", "Alaska Time (AKT)"),
+    ("Pacific/Honolulu", "Hawaii Time (HT)"),
+    ("UTC", "UTC"),
+]

templates/nrl_detail.html

@@ -123,7 +123,7 @@
                     {% endif %}
                     <div>
                         <div class="text-sm text-gray-600 dark:text-gray-400">Created</div>
-                        <div class="text-gray-900 dark:text-white">{{ location.created_at.strftime('%Y-%m-%d %H:%M') if location.created_at else 'N/A' }}</div>
+                        <div class="text-gray-900 dark:text-white">{{ location.created_at|local_datetime if location.created_at else 'N/A' }}</div>
                     </div>
                 </div>
             </div>
@@ -150,7 +150,7 @@
                     {% if assignment %}
                     <div>
                         <div class="text-sm text-gray-600 dark:text-gray-400">Assigned Since</div>
-                        <div class="text-gray-900 dark:text-white">{{ assignment.assigned_at.strftime('%Y-%m-%d %H:%M') if assignment.assigned_at else 'N/A' }}</div>
+                        <div class="text-gray-900 dark:text-white">{{ assignment.assigned_at|local_datetime if assignment.assigned_at else 'N/A' }}</div>
                     </div>
                     {% if assignment.notes %}
                     <div>

templates/partials/projects/assignment_list.html

@@ -10,7 +10,7 @@
                             <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">Location: {{ item.location.name }}</p>
                         {% endif %}
                         <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">
-                            Assigned: {% if item.assignment.assigned_at %}{{ item.assignment.assigned_at.strftime('%Y-%m-%d %H:%M') }}{% else %}Unknown{% endif %}
+                            Assigned: {% if item.assignment.assigned_at %}{{ item.assignment.assigned_at|local_datetime }}{% else %}Unknown{% endif %}
                         </p>
                     </div>
                     <button onclick="unassignUnit('{{ item.assignment.id }}')" class="text-xs px-3 py-1 rounded-full bg-amber-100 text-amber-800 dark:bg-amber-900/30 dark:text-amber-300">

templates/partials/projects/project_dashboard.html

@@ -81,7 +81,7 @@
                 {% for action in upcoming_actions %}
                     <div class="border border-gray-200 dark:border-gray-700 rounded-lg p-3">
                         <p class="font-medium text-gray-900 dark:text-white">{{ action.action_type }}</p>
-                        <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">{{ action.scheduled_time.strftime('%Y-%m-%d %H:%M') }}</p>
+                        <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">{{ action.scheduled_time|local_datetime }} {{ timezone_abbr() }}</p>
                         {% if action.description %}
                             <p class="text-xs text-gray-500 dark:text-gray-400 mt-1">{{ action.description }}</p>
                         {% endif %}

templates/partials/projects/recurring_schedule_list.html

@@ -74,7 +74,7 @@
                         {% if item.schedule.next_occurrence %}
                         <div class="text-xs">
                             <span class="text-gray-400">Next:</span>
-                            {{ item.schedule.next_occurrence.strftime('%Y-%m-%d %H:%M') }} {{ item.schedule.timezone }}
+                            {{ item.schedule.next_occurrence|local_datetime }} {{ timezone_abbr() }}
                         </div>
                         {% endif %}
                     </div>

templates/partials/projects/schedule_list.html

@@ -1,98 +1,142 @@
-<!-- Scheduled Actions List -->
+<!-- Scheduled Actions List - Grouped by Date -->
-{% if schedules %}
+{% if schedules_by_date %}
-    <div class="space-y-4">
+    <div class="space-y-6">
-        {% for item in schedules %}
+        {% for date_key, date_group in schedules_by_date.items() %}
-        <div class="border border-gray-200 dark:border-gray-700 rounded-lg p-4 hover:bg-gray-50 dark:hover:bg-gray-800/50 transition-colors">
+        <div>
+            <!-- Date Header -->
+            <div class="flex items-center gap-3 mb-3">
+                <div class="flex-shrink-0 w-10 h-10 bg-seismo-orange/10 dark:bg-seismo-orange/20 rounded-lg flex items-center justify-center">
+                    <svg class="w-5 h-5 text-seismo-orange" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 7V3m8 4V3m-9 8h10M5 21h14a2 2 0 002-2V7a2 2 0 00-2-2H5a2 2 0 00-2 2v12a2 2 0 002 2z"></path>
+                    </svg>
+                </div>
+                <div>
+                    <h3 class="font-semibold text-gray-900 dark:text-white">{{ date_group.date_display }}</h3>
+                    <p class="text-xs text-gray-500">{{ date_group.actions|length }} action{{ 's' if date_group.actions|length != 1 else '' }}</p>
+                </div>
+            </div>
+
+            <!-- Actions for this date -->
+            <div class="space-y-3 ml-13 pl-3 border-l-2 border-gray-200 dark:border-gray-700">
+                {% for item in date_group.actions %}
+                <div class="bg-white dark:bg-slate-800 border border-gray-200 dark:border-gray-700 rounded-lg p-4 hover:shadow-md transition-shadow">
                     <div class="flex items-start justify-between gap-3">
                         <div class="min-w-0 flex-1">
                             <div class="flex items-center gap-3 mb-2">
-                        <h4 class="font-semibold text-gray-900 dark:text-white">
+                                <!-- Action type with icon -->
-                            {{ item.schedule.action_type }}
+                                {% if item.schedule.action_type == 'start' %}
-                        </h4>
+                                <span class="flex items-center gap-1.5 text-green-600 dark:text-green-400 font-semibold">
+                                    <svg class="w-4 h-4" fill="currentColor" viewBox="0 0 20 20">
+                                        <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM9.555 7.168A1 1 0 008 8v4a1 1 0 001.555.832l3-2a1 1 0 000-1.664l-3-2z" clip-rule="evenodd"/>
+                                    </svg>
+                                    Start
+                                </span>
+                                {% elif item.schedule.action_type == 'stop' %}
+                                <span class="flex items-center gap-1.5 text-red-600 dark:text-red-400 font-semibold">
+                                    <svg class="w-4 h-4" fill="currentColor" viewBox="0 0 20 20">
+                                        <path fill-rule="evenodd" d="M10 18a8 8 0 100-16 8 8 0 000 16zM8 7a1 1 0 00-1 1v4a1 1 0 001 1h4a1 1 0 001-1V8a1 1 0 00-1-1H8z" clip-rule="evenodd"/>
+                                    </svg>
+                                    Stop
+                                </span>
+                                {% elif item.schedule.action_type == 'download' %}
+                                <span class="flex items-center gap-1.5 text-blue-600 dark:text-blue-400 font-semibold">
+                                    <svg class="w-4 h-4" fill="currentColor" viewBox="0 0 20 20">
+                                        <path fill-rule="evenodd" d="M3 17a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zm3.293-7.707a1 1 0 011.414 0L9 10.586V3a1 1 0 112 0v7.586l1.293-1.293a1 1 0 111.414 1.414l-3 3a1 1 0 01-1.414 0l-3-3a1 1 0 010-1.414z" clip-rule="evenodd"/>
+                                    </svg>
+                                    Download
+                                </span>
+                                {% else %}
+                                <span class="font-semibold text-gray-900 dark:text-white">{{ item.schedule.action_type }}</span>
+                                {% endif %}
+
+                                <!-- Status badge -->
                                 {% if item.schedule.execution_status == 'pending' %}
-                            <span class="px-2 py-1 text-xs font-medium bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-300 rounded-full">
+                                    <span class="px-2 py-0.5 text-xs font-medium bg-yellow-100 text-yellow-800 dark:bg-yellow-900/30 dark:text-yellow-300 rounded-full">
                                         Pending
                                     </span>
                                 {% elif item.schedule.execution_status == 'completed' %}
-                            <span class="px-2 py-1 text-xs font-medium bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300 rounded-full">
+                                    <span class="px-2 py-0.5 text-xs font-medium bg-green-100 text-green-800 dark:bg-green-900/30 dark:text-green-300 rounded-full">
                                         Completed
                                     </span>
                                 {% elif item.schedule.execution_status == 'failed' %}
-                            <span class="px-2 py-1 text-xs font-medium bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300 rounded-full">
+                                    <span class="px-2 py-0.5 text-xs font-medium bg-red-100 text-red-800 dark:bg-red-900/30 dark:text-red-300 rounded-full">
                                         Failed
                                     </span>
                                 {% elif item.schedule.execution_status == 'cancelled' %}
-                            <span class="px-2 py-1 text-xs font-medium bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300 rounded-full">
+                                    <span class="px-2 py-0.5 text-xs font-medium bg-gray-100 text-gray-800 dark:bg-gray-700 dark:text-gray-300 rounded-full">
                                         Cancelled
                                     </span>
                                 {% endif %}
                             </div>
 
-                    <div class="grid grid-cols-2 gap-3 text-sm text-gray-600 dark:text-gray-400">
+                            <div class="flex flex-wrap gap-4 text-sm text-gray-600 dark:text-gray-400">
+                                <!-- Time -->
+                                <div class="flex items-center gap-1">
+                                    <svg class="w-4 h-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                                    </svg>
+                                    <span>{{ item.schedule.scheduled_time|local_datetime('%H:%M') if item.schedule.scheduled_time else 'N/A' }}</span>
+                                </div>
+
+                                <!-- Location -->
                                 {% if item.location %}
-                        <div>
+                                <div class="flex items-center gap-1">
-                            <span class="text-xs text-gray-500">Location:</span>
+                                    <svg class="w-4 h-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z"/>
+                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 11a3 3 0 11-6 0 3 3 0 016 0z"/>
+                                    </svg>
                                     <a href="/projects/{{ project_id }}/nrl/{{ item.location.id }}"
-                               class="text-seismo-orange hover:text-seismo-navy font-medium ml-1">
+                                       class="text-seismo-orange hover:text-seismo-navy font-medium">
                                         {{ item.location.name }}
                                     </a>
                                 </div>
                                 {% endif %}
 
-                        <div>
-                            <span class="text-xs text-gray-500">Scheduled:</span>
-                            <span class="ml-1">{{ item.schedule.scheduled_time.strftime('%Y-%m-%d %H:%M') if item.schedule.scheduled_time else 'N/A' }}</span>
-                        </div>
-
                                 {% if item.schedule.executed_at %}
-                        <div>
+                                <div class="flex items-center gap-1">
-                            <span class="text-xs text-gray-500">Executed:</span>
+                                    <svg class="w-4 h-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
-                            <span class="ml-1">{{ item.schedule.executed_at.strftime('%Y-%m-%d %H:%M') }}</span>
+                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"/>
-                        </div>
+                                    </svg>
-                        {% endif %}
+                                    <span>Executed {{ item.schedule.executed_at|local_datetime('%H:%M') }}</span>
-
-                        {% if item.schedule.created_at %}
-                        <div>
-                            <span class="text-xs text-gray-500">Created:</span>
-                            <span class="ml-1">{{ item.schedule.created_at.strftime('%Y-%m-%d %H:%M') }}</span>
                                 </div>
                                 {% endif %}
                             </div>
 
-                    {% if item.schedule.description %}
+                            {% if item.schedule.error_message %}
-                    <p class="text-xs text-gray-500 dark:text-gray-400 mt-2">
+                            <div class="mt-2 p-2 bg-red-50 dark:bg-red-900/20 rounded text-xs">
-                        {{ item.schedule.description }}
+                                <span class="text-red-600 dark:text-red-400 font-medium">Error:</span>
-                    </p>
+                                <span class="ml-1 text-red-700 dark:text-red-300">{{ item.schedule.error_message }}</span>
-                    {% endif %}
-
-                    {% if item.schedule.result_message %}
-                    <div class="mt-2 text-xs">
-                        <span class="text-gray-500">Result:</span>
-                        <span class="ml-1 text-gray-700 dark:text-gray-300">{{ item.schedule.result_message }}</span>
                             </div>
                             {% endif %}
                         </div>
 
-                <div class="flex items-center gap-2">
+                        <!-- Actions -->
+                        <div class="flex items-center gap-2 flex-shrink-0">
                             {% if item.schedule.execution_status == 'pending' %}
                                 <button onclick="executeSchedule('{{ item.schedule.id }}')"
-                                class="px-3 py-1 text-xs bg-seismo-orange text-white rounded-lg hover:bg-seismo-navy transition-colors">
+                                        class="p-2 text-green-600 hover:bg-green-100 dark:hover:bg-green-900/30 rounded-lg transition-colors"
-                            Execute Now
+                                        title="Execute Now">
+                                    <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.752 11.168l-3.197-2.132A1 1 0 0010 9.87v4.263a1 1 0 001.555.832l3.197-2.132a1 1 0 000-1.664z"/>
+                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/>
+                                    </svg>
                                 </button>
                                 <button onclick="cancelSchedule('{{ item.schedule.id }}')"
-                                class="px-3 py-1 text-xs bg-red-100 text-red-700 dark:bg-red-900/30 dark:text-red-300 rounded-lg hover:bg-red-200 dark:hover:bg-red-900/50 transition-colors">
+                                        class="p-2 text-red-600 hover:bg-red-100 dark:hover:bg-red-900/30 rounded-lg transition-colors"
-                            Cancel
+                                        title="Cancel">
+                                    <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                                        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"/>
+                                    </svg>
                                 </button>
                             {% endif %}
-                    <button onclick="viewScheduleDetails('{{ item.schedule.id }}')"
-                            class="px-3 py-1 text-xs bg-gray-100 text-gray-700 dark:bg-gray-700 dark:text-gray-300 rounded-lg hover:bg-gray-200 dark:hover:bg-gray-600 transition-colors">
-                        Details
-                    </button>
                         </div>
                     </div>
                 </div>
                 {% endfor %}
             </div>
+        </div>
+        {% endfor %}
+    </div>
 {% else %}
     <div class="text-center py-12">
         <svg class="w-16 h-16 mx-auto mb-4 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
@@ -141,9 +185,4 @@ function cancelSchedule(scheduleId) {
         alert('Error cancelling schedule: ' + error);
     });
 }
-
-function viewScheduleDetails(scheduleId) {
-    // TODO: Implement schedule details modal
-    alert('Schedule details coming soon: ' + scheduleId);
-}
 </script>

templates/partials/projects/session_list.html

@@ -41,13 +41,13 @@
 
                         <div>
                             <span class="text-xs text-gray-500">Started:</span>
-                            <span class="ml-1">{{ item.session.started_at.strftime('%Y-%m-%d %H:%M') if item.session.started_at else 'N/A' }}</span>
+                            <span class="ml-1">{{ item.session.started_at|local_datetime if item.session.started_at else 'N/A' }}</span>
                         </div>
 
                         {% if item.session.stopped_at %}
                         <div>
                             <span class="text-xs text-gray-500">Ended:</span>
-                            <span class="ml-1">{{ item.session.stopped_at.strftime('%Y-%m-%d %H:%M') }}</span>
+                            <span class="ml-1">{{ item.session.stopped_at|local_datetime }}</span>
                         </div>
                         {% endif %}
 

templates/partials/projects/unified_files.html

@@ -24,7 +24,7 @@
                         </svg>
                         <div>
                             <div class="font-semibold text-gray-900 dark:text-white">
-                                {{ session.started_at.strftime('%Y-%m-%d %H:%M') if session.started_at else 'Unknown Date' }}
+                                {{ session.started_at|local_datetime if session.started_at else 'Unknown Date' }}
                             </div>
                             <div class="text-xs text-gray-500 dark:text-gray-400">
                                 {% if unit %}{{ unit.id }}{% else %}Unknown Unit{% endif %}
@@ -155,7 +155,7 @@
                                 <!-- Download Time -->
                                 {% if file.downloaded_at %}
                                 <span class="mx-1">•</span>
-                                {{ file.downloaded_at.strftime('%Y-%m-%d %H:%M') }}
+                                {{ file.downloaded_at|local_datetime }}
                                 {% endif %}
 
                                 <!-- Source Info from Metadata -->

templates/partials/projects/unit_list.html

@@ -60,7 +60,7 @@
                         {% if item.assignment.assigned_at %}
                         <div class="col-span-2">
                             <span class="text-xs text-gray-500">Assigned:</span>
-                            <span class="ml-1">{{ item.assignment.assigned_at.strftime('%Y-%m-%d %H:%M') }}</span>
+                            <span class="ml-1">{{ item.assignment.assigned_at|local_datetime }}</span>
                         </div>
                         {% endif %}
                     </div>

templates/partials/slm_device_list.html

@@ -51,7 +51,7 @@
 
             <div class="mt-2 text-xs text-gray-500 dark:text-gray-400">
                 {% if unit.slm_last_check %}
-                    Last check: {{ unit.slm_last_check.strftime('%Y-%m-%d %H:%M') }}
+                    Last check: {{ unit.slm_last_check|local_datetime }}
                 {% else %}
                     No recent check-in
                 {% endif %}