This is possible, but for some reason you can only set the different time zones on the iOS/iPadOS versions of Calendar, not the Mac one. Mac Calendar displays them just fine though. It’s a tiny bit hidden, but once you know easy to do. First, create or edit your event (you can create on the Mac and then edit on iOS to sort out the time zones). You get this display of the start and end times: Tap on the start time (not the date) and under the dial for setting the time you can set the time z...
