one of my iCloud calendars disappeared today at 11:30 cet from my iCloud account, subsequently from all my apple devices.

i did not delete it myself as i was just posting entries into the calendar as this happened.

to me the question arises was i being hacked or did some it-guy delete it by accident.

is there a way to determine the fault?

as i did not turn on the iCloud backup and the last full i phone sync is a month back (too far to consider it worthy) i guess my data is lost?

any other ideas. are there different icloud mirrors to access and compare the data even just to find out why it was deleted?