Why is my Microsoft calendar not displaying events from a specific user in a specific time zone?

1. Check the account settings. Verify that the calendar account in question is setup correctly, with the correct time zone.
2. Verify the calendar invitation. Make sure that the calendar invitation sent to the user was properly accepted.
3. Check the display settings. Review the calendar display options, such as whether to show or hide certain user calendars.
4. Check the synchronization settings. Confirm that the calendar synchronization settings are correct for the affected user's device.