User blog comment:Wikibuilder88/U have completed da board/@comment-5626120-20121128200258/@comment-5051663-20121130043410

As near as I can tell, all of the stated deadlines in Tiny Village, except timed booster pack offers, end worldwide at the same time. The timed booster pack challenges seem to start counting down when you first read them. They also have a different deadline for when they actually go away, rather than just showing as expired.

The game does not pick up changes to buttons & such at precise times (often you need to start the game to get them)