In addition to the default timezone, you can display time zones that have been marked as favorites by you. The default timezone can be changed in the basic settings
How to display multiple time zones in a calendar view:
Click on in the toolbar. Select one of the following entries: , or .
Click on the button on the left side above the calendar sheet. Enable a timezone in the menu below Favorites.
In order to add a timezone to the favorites or to remove it from the favorites, click on . You are redirected to the calendar settings.