(iphone xr with Samgsung Active Watch 2)
I have been using iCloud calendar subscription feature (to sync calendar events from outlook to icloud), and I sometimes experience:
1/ calendar on watch is not synced with iphone or only partially synced
2/ "myday" clock isn't synced with watch calendar events
Quick solution:
1/ open Galaxy Watch Active2 app on your phone and connect your phone with you watch via bluetooth
2/ click settings on your iphone -> Apple ID -> iCloud -> uncheck Calendars sync (turn green slide button on the right to gray) -> it pops up "What would you like to do with the previously synced iCloud calendars on your iPhone" -> click Delete from My iPhone -> check Calendar sync (turn gray back to green)
3/ wait for a few seconds for the calendar events to come back to your phone calendar
4/ once your phone is in sync with iCloud, wait for a few seconds for the watch to receive these calendar events
Some thoughts:
I believe Active Watch 2 does some optimization for saving storage size, so it only pulls partial calendar events periodically (like some mentioned earlier, once every a few hours). And in case one of its sync-up got interrupted (turning off phone's bluetooth, watch being out of range, etc.), it'd be out of sync. An elegant solution would be to add a "sync" button either on watch or phone, but I guess Samsung eng is prioritizing some other works at this moment. So solution here would be to trigger a manual calendar sync
