Only a few hours after One hour game jam will be the start of one of the coolest jams out there, and likely the last one of its kind: Zero Hour Game Jam runs on Sunday 25 Oct from 1AM-1AM (UK time) and 2AM-2AM (Central European time). This is likely to be your last chance to make a video game in zero hours, at least in Europe! (US version is on 1 Nov)
Also 1hgj next week will still be at 8PM UTC, but that now means 8PM UTC and 9PM CET. Check for other time zones.