calendar schmalendar
12:12:12 only in the Christian calendar. in the Hebrew calendar it happened over 3000 years ago, and in the Islamic calendar, it’s still got around 700 years to go.
I once read a short story by one of the well known SF writers, where the Archangel Gabriel blew the last trump on such and such a date. All the dead were ok with it, but the living disagreed on the actual date, so they came up with a new “day zero” that all agreed with. 6th August 1945. The Last Trump would then be blown approx 2000 years after that