diff --git a/src/helper/location_recorder/__init__.py b/src/helper/location_recorder/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/util/location_recorder.py b/src/util/location_recorder.py
index 5364769..16e4889 100644
--- a/src/util/location_recorder.py
+++ b/src/util/location_recorder.py
@@ -1,5 +1,5 @@
-import datetime
 from dataclasses import dataclass
+from datetime import UTC, datetime
 
 from sqlalchemy import REAL, TEXT, insert, text
 from sqlalchemy.ext.asyncio import AsyncConnection, create_async_engine
@@ -45,12 +45,15 @@ class LocationRecorder:
     async def dispose_db_engine(self) -> None:
         await self._engine.dispose()
 
-    async def insert_location(self, person: str, datetime: str, location: LocationData) -> None:
+    async def insert_location(self, person: str, date_time: datetime, location: LocationData) -> None:
+        if date_time.tzinfo != UTC:
+            date_time = date_time.astimezone(UTC)
+        date_time_str = date_time.strftime("%Y-%m-%dT%H:%M:%S%z")
         async with self._engine.connect() as conn:
             await conn.execute(
                 insert(Location).values(
                     person=person,
-                    datetime=datetime,
+                    datetime=date_time_str,
                     latitude=location.latitude,
                     longitude=location.longitude,
                     altitude=location.altitude,
@@ -60,9 +63,8 @@ class LocationRecorder:
             await conn.aclose()
 
     async def insert_location_now(self, person: str, location: LocationData) -> None:
-        now = datetime.datetime.now(tz=datetime.UTC)
-        now_str = now.strftime("%Y-%m-%dT%H:%M:%S%z")
-        await self.insert_location(person, now_str, location)
+        now_utc = datetime.now(tz=UTC)
+        await self.insert_location(person, now_utc, location)
 
     async def _get_user_version(self, conn: AsyncConnection) -> int:
         return (await conn.execute(text("PRAGMA user_version"))).first()[0]
diff --git a/src/util/tests/test_location_recorder.py b/src/util/tests/test_location_recorder.py
index f3cd8f6..0775a18 100644
--- a/src/util/tests/test_location_recorder.py
+++ b/src/util/tests/test_location_recorder.py
@@ -1,12 +1,14 @@
 import asyncio
 import sqlite3
+from datetime import UTC, datetime
 from pathlib import Path
+from zoneinfo import ZoneInfo
 
 import pytest
 from sqlalchemy import INTEGER, REAL, TEXT, create_engine, text
 from sqlalchemy.orm import DeclarativeBase, Mapped, mapped_column
 
-from src.util.location_recorder import LocationRecorder
+from src.util.location_recorder import LocationData, LocationRecorder
 
 DB_PATH = Path(__file__).resolve().parent / "test.db"
 DB_PATH_STR = str(DB_PATH)
@@ -121,10 +123,108 @@ def test_migration_1_latest() -> None:
 @pytest.mark.usefixtures("_teardown")
 def test_create_db() -> None:
     location_recorder = LocationRecorder(db_path=DB_PATH_STR)
-    asyncio.run(location_recorder.create_db_engine())
-    location_recorder.dispose_db_engine()
+    event_loop = asyncio.get_event_loop()
+    event_loop.run_until_complete(location_recorder.create_db_engine())
+    event_loop.run_until_complete(location_recorder.dispose_db_engine())
     assert DB_PATH.exists()
     sqlite3_db = sqlite3.connect(DB_PATH_STR)
     sqlite3_cursor = sqlite3_db.cursor()
     sqlite3_cursor.execute("PRAGMA user_version")
     assert sqlite3_cursor.fetchone()[0] == LocationRecorder.USER_VERSION
+
+
+@pytest.mark.usefixtures("_create_v2_db")
+@pytest.mark.usefixtures("_teardown")
+def test_inser_location_utc() -> None:
+    latitude = 1.0
+    longitude = 2.0
+    altitude = 3.0
+    person = "test_person"
+    date_time = datetime.now(tz=UTC)
+    location_recorder = LocationRecorder(db_path=DB_PATH_STR)
+    event_loop = asyncio.get_event_loop()
+    event_loop.run_until_complete(location_recorder.create_db_engine())
+    location_data = LocationData(latitude=latitude, longitude=longitude, altitude=altitude)
+    event_loop.run_until_complete(
+        location_recorder.insert_location(
+            person=person,
+            date_time=date_time,
+            location=location_data,
+        ),
+    )
+    event_loop.run_until_complete(location_recorder.dispose_db_engine())
+    sqlite3_db = sqlite3.connect(DB_PATH_STR)
+    sqlite3_cursor = sqlite3_db.cursor()
+    sqlite3_cursor.execute("SELECT * FROM location")
+    location = sqlite3_cursor.fetchone()
+    assert location[0] == person
+    assert location[1] == date_time.strftime("%Y-%m-%dT%H:%M:%S%z")
+    assert location[2] == latitude
+    assert location[3] == longitude
+    assert location[4] == altitude
+    sqlite3_cursor.close()
+
+
+@pytest.mark.usefixtures("_create_v2_db")
+@pytest.mark.usefixtures("_teardown")
+def test_inser_location_other() -> None:
+    latitude = 1.0
+    longitude = 2.0
+    altitude = 3.0
+    person = "test_person"
+    tz = ZoneInfo("Asia/Shanghai")
+    date_time = datetime.now(tz=tz)
+    location_recorder = LocationRecorder(db_path=DB_PATH_STR)
+    event_loop = asyncio.get_event_loop()
+    event_loop.run_until_complete(location_recorder.create_db_engine())
+    location_data = LocationData(latitude=latitude, longitude=longitude, altitude=altitude)
+    event_loop.run_until_complete(
+        location_recorder.insert_location(
+            person=person,
+            date_time=date_time,
+            location=location_data,
+        ),
+    )
+    event_loop.run_until_complete(location_recorder.dispose_db_engine())
+    sqlite3_db = sqlite3.connect(DB_PATH_STR)
+    sqlite3_cursor = sqlite3_db.cursor()
+    sqlite3_cursor.execute("SELECT * FROM location")
+    location = sqlite3_cursor.fetchone()
+    assert location[0] == person
+    assert location[1] == date_time.astimezone(UTC).strftime("%Y-%m-%dT%H:%M:%S%z")
+    assert location[2] == latitude
+    assert location[3] == longitude
+    assert location[4] == altitude
+    sqlite3_cursor.close()
+
+
+@pytest.mark.usefixtures("_create_v2_db")
+@pytest.mark.usefixtures("_teardown")
+def test_insert_location_now() -> None:
+    latitude = 1.0
+    longitude = 2.0
+    altitude = 3.0
+    person = "test_person"
+    date_time = datetime.now(tz=UTC)
+    location_recorder = LocationRecorder(db_path=DB_PATH_STR)
+    event_loop = asyncio.get_event_loop()
+    event_loop.run_until_complete(location_recorder.create_db_engine())
+    location_data = LocationData(latitude=latitude, longitude=longitude, altitude=altitude)
+    event_loop.run_until_complete(
+        location_recorder.insert_location_now(
+            person=person,
+            location=location_data,
+        ),
+    )
+    event_loop.run_until_complete(location_recorder.dispose_db_engine())
+    sqlite3_db = sqlite3.connect(DB_PATH_STR)
+    sqlite3_cursor = sqlite3_db.cursor()
+    sqlite3_cursor.execute("SELECT * FROM location")
+    location = sqlite3_cursor.fetchone()
+    assert location[0] == person
+    date_time_act = datetime.strptime(location[1], "%Y-%m-%dT%H:%M:%S%z")
+    assert date_time.date() == date_time_act.date()
+    assert location[2] == latitude
+    assert location[3] == longitude
+    assert location[4] == altitude
+    sqlite3_cursor.close()