Replace pytz with native tz-aware objects and zoneinfo library

Supported from Python 3.9, see https://peps.python.org/pep-0615/. Also
https://blog.ganssle.io/articles/2019/11/utcnow.html.

docker/main/requirements-wheels.txt

@@ -25,7 +25,6 @@ peewee_migrate == 1.14.*
 psutil == 7.1.*
 pydantic == 2.10.*
 git+https://github.com/fbcotter/py3nvml#egg=py3nvml
-pytz == 2025.*
 pyzmq == 26.2.*
 ruamel.yaml == 0.18.*
 tzlocal == 5.2

docs/static/frigate-api.yaml

@@ -2013,7 +2013,7 @@ paths:
           required: false
           schema:
             type: string
-            default: utc
+            default: UTC
             title: Timezone
       responses:
         '200':
@@ -3055,7 +3055,7 @@ paths:
             anyOf:
               - type: string
               - type: 'null'
-            default: utc
+            default: UTC
             title: Timezone
       responses:
         '200':
@@ -4153,7 +4153,7 @@ paths:
             anyOf:
               - type: string
               - type: 'null'
-            default: utc
+            default: UTC
             title: Timezone
       responses:
         '200':
@@ -4405,7 +4405,7 @@ paths:
             anyOf:
               - type: string
               - type: 'null'
-            default: utc
+            default: UTC
             title: Timezone
         - name: min_score
           in: query
@@ -4485,7 +4485,7 @@ paths:
             anyOf:
               - type: string
               - type: 'null'
-            default: utc
+            default: UTC
             title: Timezone
         - name: has_clip
           in: query
@@ -6780,7 +6780,7 @@ paths:
           required: false
           schema:
             type: string
-            default: utc
+            default: UTC
             title: Timezone
         - name: cameras
           in: query
@@ -6830,7 +6830,7 @@ paths:
           required: false
           schema:
             type: string
-            default: utc
+            default: UTC
             title: Timezone
       responses:
         '200':

frigate/api/defs/query/app_query_parameters.py

@@ -7,4 +7,4 @@ class AppTimelineHourlyQueryParameters(BaseModel):
     after: float | None = None
     before: float | None = None
     limit: int | None = 200
-    timezone: str | None = "utc"
+    timezone: str | None = "UTC"

frigate/api/defs/query/events_query_parameters.py

@@ -39,7 +39,7 @@ class EventsQueryParams(BaseModel):
     max_length: float | None = None
     event_id: str | None = None
     sort: str | None = None
-    timezone: str | None = "utc"
+    timezone: str | None = "UTC"
 
 
 class EventsSearchQueryParams(BaseModel):
@@ -66,7 +66,7 @@ class EventsSearchQueryParams(BaseModel):
     has_clip: bool | None = None
     has_snapshot: bool | None = None
     is_submitted: bool | None = None
-    timezone: str | None = "utc"
+    timezone: str | None = "UTC"
     min_score: float | None = None
     max_score: float | None = None
     min_speed: float | None = None
@@ -76,6 +76,6 @@ class EventsSearchQueryParams(BaseModel):
 
 
 class EventsSummaryQueryParams(BaseModel):
-    timezone: str | None = "utc"
+    timezone: str | None = "UTC"
     has_clip: int | None = None
     has_snapshot: int | None = None

frigate/api/defs/query/recordings_query_parameters.py

@@ -3,7 +3,7 @@ from pydantic.json_schema import SkipJsonSchema
 
 
 class MediaRecordingsSummaryQueryParams(BaseModel):
-    timezone: str = "utc"
+    timezone: str = "UTC"
     cameras: str | None = "all"
 
 

frigate/api/defs/query/review_query_parameters.py

@@ -19,7 +19,7 @@ class ReviewSummaryQueryParams(BaseModel):
     cameras: str = "all"
     labels: str = "all"
     zones: str = "all"
-    timezone: str = "utc"
+    timezone: str = "UTC"
 
 
 class ReviewActivityMotionQueryParams(BaseModel):

frigate/api/media.py

@@ -11,10 +11,10 @@ from datetime import UTC, datetime, timedelta
 from pathlib import Path as FilePath
 from typing import Any
 from urllib.parse import unquote
+from zoneinfo import ZoneInfo
 
 import cv2
 import numpy as np
-import pytz
 from fastapi import APIRouter, Depends, Path, Query, Request, Response
 from fastapi.responses import FileResponse, JSONResponse, StreamingResponse
 from pathvalidate import sanitize_filename
@@ -713,7 +713,7 @@ async def vod_hour(
     parts = year_month.split("-")
     start_date = (
         datetime(int(parts[0]), int(parts[1]), day, hour, tzinfo=UTC)
-        - datetime.now(pytz.timezone(tz_name.replace(",", "/"))).utcoffset()
+        - datetime.now(ZoneInfo(tz_name.replace(",", "/"))).utcoffset()
     )
     end_date = start_date + timedelta(hours=1) - timedelta(milliseconds=1)
     start_ts = start_date.timestamp()

frigate/api/preview.py

@@ -5,8 +5,8 @@ import logging
 import os
 import threading
 from datetime import UTC, datetime, timedelta
+from zoneinfo import ZoneInfo
 
-import pytz
 from fastapi import APIRouter, Depends, HTTPException
 from fastapi.responses import JSONResponse
 
@@ -126,7 +126,7 @@ def preview_hour(
     parts = year_month.split("-")
     start_date = (
         datetime(int(parts[0]), int(parts[1]), int(day), int(hour), tzinfo=UTC)
-        - datetime.now(pytz.timezone(tz_name.replace(",", "/"))).utcoffset()
+        - datetime.now(ZoneInfo(tz_name.replace(",", "/"))).utcoffset()
     )
     end_date = start_date + timedelta(hours=1) - timedelta(milliseconds=1)
     start_ts = start_date.timestamp()

frigate/api/record.py

@@ -120,7 +120,7 @@ def all_recordings_summary(
 @router.get(
     "/{camera_name}/recordings/summary", dependencies=[Depends(require_camera_access)]
 )
-async def recordings_summary(camera_name: str, timezone: str = "utc"):
+async def recordings_summary(camera_name: str, timezone: str = "UTC"):
     """Returns hourly summary for recordings of given camera"""
 
     time_range_query = (

frigate/record/export.py

@@ -12,8 +12,8 @@ import threading
 from collections.abc import Callable
 from enum import Enum
 from pathlib import Path
+from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
 
-import pytz  # type: ignore[import-untyped]
 from peewee import DoesNotExist
 
 from frigate.config import FfmpegConfig, FrigateConfig
@@ -371,8 +371,8 @@ class RecordingExporter(threading.Thread):
         tz_name = self.config.ui.timezone
         if tz_name:
             try:
-                tz = pytz.timezone(tz_name)
+                tz = ZoneInfo(tz_name)
-            except pytz.UnknownTimeZoneError:
+            except (ValueError, ZoneInfoNotFoundError):
                 tz = None
             if tz is not None:
                 return datetime.datetime.fromtimestamp(timestamp, tz=tz).strftime(
@@ -533,8 +533,8 @@ class RecordingExporter(threading.Thread):
         tz: datetime.tzinfo | None = None
         if tz_name:
             try:
-                tz = pytz.timezone(tz_name)
+                tz = ZoneInfo(tz_name)
-            except pytz.UnknownTimeZoneError:
+            except (ValueError, ZoneInfoNotFoundError):
                 tz = None
         if tz is None:
             tz = datetime.UTC

frigate/test/http_api/test_http_media.py

@@ -1,8 +1,8 @@
 """Unit tests for recordings/media API endpoints."""
 
 from datetime import UTC, datetime
+from zoneinfo import ZoneInfo
 
-import pytz
 from fastapi import Request
 
 from frigate.api.auth import get_allowed_cameras_for_filter, get_current_user
@@ -51,16 +51,16 @@ class TestHttpMedia(BaseTestHttp):
         In 2024, DST in America/New_York transitions on March 10, 2024 at 2:00 AM
         Clocks spring forward from 2:00 AM to 3:00 AM (EST to EDT)
         """
-        tz = pytz.timezone("America/New_York")
+        tz = ZoneInfo("America/New_York")
 
         # March 9, 2024 at 12:00 PM EST (before DST)
-        march_9_noon = tz.localize(datetime(2024, 3, 9, 12, 0, 0)).timestamp()
+        march_9_noon = datetime(2024, 3, 9, 12, 0, 0, tzinfo=tz).timestamp()
 
         # March 10, 2024 at 12:00 PM EDT (after DST transition)
-        march_10_noon = tz.localize(datetime(2024, 3, 10, 12, 0, 0)).timestamp()
+        march_10_noon = datetime(2024, 3, 10, 12, 0, 0, tzinfo=tz).timestamp()
 
         # March 11, 2024 at 12:00 PM EDT (after DST)
-        march_11_noon = tz.localize(datetime(2024, 3, 11, 12, 0, 0)).timestamp()
+        march_11_noon = datetime(2024, 3, 11, 12, 0, 0, tzinfo=tz).timestamp()
 
         with AuthTestClient(self.app) as client:
             # Insert recordings for each day
@@ -124,19 +124,16 @@ class TestHttpMedia(BaseTestHttp):
         In 2024, DST in America/New_York transitions on November 3, 2024 at 2:00 AM
         Clocks fall back from 2:00 AM to 1:00 AM (EDT to EST)
         """
-        tz = pytz.timezone("America/New_York")
+        tz = ZoneInfo("America/New_York")
 
         # November 2, 2024 at 12:00 PM EDT (before DST transition)
-        nov_2_noon = tz.localize(datetime(2024, 11, 2, 12, 0, 0)).timestamp()
+        nov_2_noon = datetime(2024, 11, 2, 12, 0, 0, tzinfo=tz).timestamp()
 
         # November 3, 2024 at 12:00 PM EST (after DST transition)
-        # Need to specify is_dst=False to get the time after fall back
+        nov_3_noon = datetime(2024, 11, 3, 12, 0, 0, tzinfo=tz).timestamp()
-        nov_3_noon = tz.localize(
-            datetime(2024, 11, 3, 12, 0, 0), is_dst=False
-        ).timestamp()
 
         # November 4, 2024 at 12:00 PM EST (after DST)
-        nov_4_noon = tz.localize(datetime(2024, 11, 4, 12, 0, 0)).timestamp()
+        nov_4_noon = datetime(2024, 11, 4, 12, 0, 0, tzinfo=tz).timestamp()
 
         with AuthTestClient(self.app) as client:
             # Insert recordings for each day
@@ -197,13 +194,13 @@ class TestHttpMedia(BaseTestHttp):
         """
         Test recordings summary with multiple cameras across DST boundary.
         """
-        tz = pytz.timezone("America/New_York")
+        tz = ZoneInfo("America/New_York")
 
         # March 9, 2024 at 10:00 AM EST (before DST)
-        march_9_morning = tz.localize(datetime(2024, 3, 9, 10, 0, 0)).timestamp()
+        march_9_morning = datetime(2024, 3, 9, 10, 0, 0, tzinfo=tz).timestamp()
 
         # March 10, 2024 at 3:00 PM EDT (after DST transition)
-        march_10_afternoon = tz.localize(datetime(2024, 3, 10, 15, 0, 0)).timestamp()
+        march_10_afternoon = datetime(2024, 3, 10, 15, 0, 0, tzinfo=tz).timestamp()
 
         with AuthTestClient(self.app) as client:
             # Override allowed cameras for this test to include both
@@ -266,15 +263,15 @@ class TestHttpMedia(BaseTestHttp):
         """
         Test recordings that span the exact DST transition time.
         """
-        tz = pytz.timezone("America/New_York")
+        tz = ZoneInfo("America/New_York")
 
         # March 10, 2024 at 1:00 AM EST (1 hour before DST transition)
         # At 2:00 AM, clocks jump to 3:00 AM
-        before_transition = tz.localize(datetime(2024, 3, 10, 1, 0, 0)).timestamp()
+        before_transition = datetime(2024, 3, 10, 1, 0, 0, tzinfo=tz).timestamp()
 
         # Recording that spans the transition (1:00 AM to 3:30 AM EDT)
         # This is 1.5 hours of actual time but spans the "missing" hour
-        after_transition = tz.localize(datetime(2024, 3, 10, 3, 30, 0)).timestamp()
+        after_transition = datetime(2024, 3, 10, 3, 30, 0, tzinfo=tz).timestamp()
 
         with AuthTestClient(self.app) as client:
             Recordings.insert(
@@ -334,7 +331,7 @@ class TestHttpMedia(BaseTestHttp):
 
             # Test with UTC timezone
             response = client.get(
-                "/recordings/summary", params={"timezone": "utc", "cameras": "all"}
+                "/recordings/summary", params={"timezone": "UTC", "cameras": "all"}
             )
 
             assert response.status_code == 200
@@ -365,8 +362,8 @@ class TestHttpMedia(BaseTestHttp):
         """
         Test recordings summary filtered to a single camera.
         """
-        tz = pytz.timezone("America/New_York")
+        tz = ZoneInfo("America/New_York")
-        march_10_noon = tz.localize(datetime(2024, 3, 10, 12, 0, 0)).timestamp()
+        march_10_noon = datetime(2024, 3, 10, 12, 0, 0, tzinfo=tz).timestamp()
 
         with AuthTestClient(self.app) as client:
             # Insert recordings for both cameras

frigate/test/http_api/test_http_review.py

@@ -250,7 +250,7 @@ class TestHttpReview(BaseTestHttp):
                 "cameras": "front_door",
                 "labels": "all",
                 "zones": "all",
-                "timezone": "utc",
+                "timezone": "UTC",
             }
             response = client.get("/review/summary", params=params)
             assert response.status_code == 200

frigate/util/time.py

@@ -2,9 +2,8 @@
 
 import datetime
 import logging
-from zoneinfo import ZoneInfoNotFoundError
+from zoneinfo import ZoneInfo, ZoneInfoNotFoundError
 
-import pytz
 from tzlocal import get_localzone
 
 logger = logging.getLogger(__name__)
@@ -12,7 +11,7 @@ logger = logging.getLogger(__name__)
 
 def get_tz_modifiers(tz_name: str) -> tuple[str, str, float]:
     seconds_offset = (
-        datetime.datetime.now(pytz.timezone(tz_name)).utcoffset().total_seconds()
+        datetime.datetime.now(ZoneInfo(tz_name)).utcoffset().total_seconds()
     )
     hours_offset = int(seconds_offset / 60 / 60)
     minutes_offset = int(seconds_offset / 60 - hours_offset * 60)
@@ -25,7 +24,7 @@ def get_tomorrow_at_time(hour: int) -> datetime.datetime:
     """Returns the datetime of the following day at 2am."""
     try:
         tomorrow = datetime.datetime.now(get_localzone()) + datetime.timedelta(days=1)
-    except ZoneInfoNotFoundError:
+    except (ValueError, ZoneInfoNotFoundError):
         tomorrow = datetime.datetime.now(datetime.UTC) + datetime.timedelta(days=1)
         logger.warning(
             "Using utc for maintenance due to missing or incorrect timezone set"
@@ -45,7 +44,7 @@ def is_current_hour(timestamp: int) -> bool:
 
 def get_dst_transitions(
     tz_name: str, start_time: float, end_time: float
-) -> list[tuple[float, float]]:
+) -> list[tuple[float, float, int]]:
     """
     Find DST transition points and return time periods with consistent offsets.
 
@@ -59,8 +58,8 @@ def get_dst_transitions(
         continuous periods with the same UTC offset
     """
     try:
-        tz = pytz.timezone(tz_name)
+        tz = ZoneInfo(tz_name)
-    except pytz.UnknownTimeZoneError:
+    except (ValueError, ZoneInfoNotFoundError):
         # If timezone is invalid, return single period with no offset
         return [(start_time, end_time, 0)]
 
@@ -68,14 +67,14 @@ def get_dst_transitions(
     current = start_time
 
     # Get initial offset
-    dt = datetime.datetime.utcfromtimestamp(current).replace(tzinfo=pytz.UTC)
+    dt = datetime.datetime.fromtimestamp(current, tz=datetime.UTC)
     local_dt = dt.astimezone(tz)
     prev_offset = local_dt.utcoffset().total_seconds()
     period_start = start_time
 
     # Check each day for offset changes
     while current <= end_time:
-        dt = datetime.datetime.utcfromtimestamp(current).replace(tzinfo=pytz.UTC)
+        dt = datetime.datetime.fromtimestamp(current, tz=datetime.UTC)
         local_dt = dt.astimezone(tz)
         current_offset = local_dt.utcoffset().total_seconds()