Talk:Colosseum/@comment-31833772-20170723080331/@comment-33104098-20170915212837

I think the 24hr to 23hr change started on the July 20th event.

I believe I waited in game for the event to finish that day, so the July-19th-event would still have been 24hr. But the next day, July 21th, I was surprised to find the event had finished earlier than expected. And sure enough the next event's timer said 23hr.

Plus according to the game update history there was a 3.16.0 Part 7 update that day. Although changing those timers may not be a big deal, it's reasonable if the change was pushed together with other updates.