fixes

front/js/common.js

@@ -464,7 +464,7 @@ function localizeTimestamp(input) {
     if (!hasOffset) {
       // Ensure proper ISO format before appending Z
       // Replace space with 'T' if needed: "2026-02-11 11:37:02" → "2026-02-11T11:37:02Z"
-      isoStr = isoStr.replace(' ', 'T') + 'Z';
+      isoStr = isoStr.trim().replace(/^(\d{4}-\d{2}-\d{2}) (\d{2}:\d{2}:\d{2})$/, '$1T$2') + 'Z';
     }
 
     const date = new Date(isoStr);

server/models/event_instance.py

@@ -93,7 +93,7 @@ class EventInstance:
                 eve_EventType, eve_AdditionalInfo,
                 eve_PendingAlertEmail, eve_PairEventRowid
             ) VALUES (?,?,?,?,?,?,?)
-        """, (mac, ip, timeNowUTC(as_string=False), eventType, info,
+        """, (mac, ip, timeNowUTC(), eventType, info,
               1 if pendingAlert else 0, pairRow))
         conn.commit()
         conn.close()

server/utils/datetime_utils.py

@@ -48,8 +48,11 @@ def timeNowUTC(as_string=True):
 
 
 def get_timezone_offset():
-    now = timeNowUTC(as_string=False).replace(tzinfo=conf.tz) if conf.tz else timeNowUTC(as_string=False)
-    offset_hours = now.utcoffset().total_seconds() / 3600 if now.utcoffset() else 0
+    if conf.tz:
+        now = timeNowUTC(as_string=False).astimezone(conf.tz)
+        offset_hours = now.utcoffset().total_seconds() / 3600
+    else:
+        offset_hours = 0
     offset_formatted = "{:+03d}:{:02d}".format(int(offset_hours), int((offset_hours % 1) * 60))
     return offset_formatted
 

test/api_endpoints/test_sessions_endpoints.py

@@ -188,7 +188,7 @@ def test_get_sessions_calendar(client, api_token, test_mac):
     Cleans up test sessions after test.
     """
     # --- Setup: create two sessions for the test MAC ---
-    now = datetime.now()
+    now = timeNowUTC(as_string=False)
     start1 = (now - timedelta(days=2)).isoformat(timespec="seconds")
     end1   = (now - timedelta(days=1, hours=20)).isoformat(timespec="seconds")
 

test/server/test_datetime_utils.py

@@ -44,7 +44,7 @@ class TestTimeNowUTC:
     def test_timeNowUTC_datetime_has_UTC_timezone(self):
         """Test that datetime object has UTC timezone"""
         result = timeNowUTC(as_string=False)
-        assert result.tzinfo is datetime.UTC or result.tzinfo is not None
+        assert result.tzinfo is datetime.UTC
 
     def test_timeNowUTC_datetime_no_microseconds(self):
         """Test that datetime object has microseconds set to 0"""