When you open your ICP account you will select a time zone for your account. For each event that you set up you will be able to specify the time zone of the event.
The system will recalculate and show automatically to each user the time of the event in the event time zone and the computer time zone.
You will be able to see that information as an account owner in the list of your events. Participants in an event will be able to see that information in the information panel on the left. It will show:
-time of the event in the event time zone
-time of the event in the computer time zone
-current time in the event time zone
-current time in the computer time zone