I believe there’s an error in the current run of Oath of the Gatewatch… the event clock is set to end ~15 hours from now, same as Emrakul’s Corruption, but the October Sneak Peek says it should be running until Thursday…
Looks like it just started again sometime this afternoon. Says there is approx 20 hours remaining as of this comment. It’s Part 1 again.
I rather like these quickie events. Would be nice if today’s event was not a repeat, though.