A couple of additional bits re: the 1:1 change:
There's a calendar blip in which everyone in encouraged to have some fun time-tornado shenanigans. Did you go to sleep and wake up in a totally different house? With a dog you don't remember getting? Also exactly when did you start this new job?? People coming in from outside town can absolutely use this as an in for why they showed up. 'THIS THING WHERE 12 WEEKS VANISHED, WTF?' is a perfectly good reason to arrive at the seeming locus of this weird. The part where the rest of the (mundane) world seems to think this_is_fine.jpg while everyone with in town woke up almost certain they left the stove on or felt an earthquake is a good reason to be Looking For Answers.