Oh. Oh I see. That explains it: it's because #Monsterdon is a Yank thing, so it only gets started at 1am. Pfft, as if!
Well.
I CALL UPON OUR GALLANT ALLIES IN EUROPE:
Let us have CET and hygge!!
Let us have metric units of measurement!!
Let us have the REAL Hallowe'en.
Let us have reasonably-timed watch parties!!
Who's with me??