You can always use logcat redirected to a file, then spend hours (or days) looking through it for the few lines you need. (Or grep them.)
Or you can call the carrier (whoever maintains the tower, regardless of whom you pay for service - the US carriers are AT&T, Sprint, TMobile, US Cellular and Verizon - if you use anyone else, you're still using the towers of one of those carriers) and ask if they're having time and/or date problems on that tower. (It does happen sometimes - and unless someone in one of their nearby stores looks at his or her phone for the time, or a user like you calls them, they'll never know it. [The only time they have to compare to the time they're transmitting - is the time they're transmitting.])
09-04-2018 05:48 PM