A. 1. Check your device's date and time settings: Go to 'Settings' > 'Date & time' and ensure 'Automatic date & time' is enabled. 2. Open Google Calendar, go to 'Settings' > 'General' > 'Time zone' and ensure it is set correctly. You can also try toggling the time zone setting off and back on.

B. 1. If you are traveling, ensure that the 'Use device time zone' option is enabled in the Calendar settings.