I've never seen this before. Everything else is working totally fine on my new-ish 4s. This morning though I noticed that the date still read December 9th. So I clicked on the calendar and sure enough it gave me the right date but when I exited the widget, hoping it would update the home screen it didn't. I restarted my phone and it's now displaying the right date. Has anyone else ever had this happen? It's not a huge deal but one that I could see becoming very annoying. The only thing I can think is that I was roaming in the U.S. last night (I live in Canada,) so I would have switched networks at some point. I used to do that with my 3GS without any issue though. I've googled but can not seem to find anyone else with the problem. Any thoughts?