Automatic time zone error

I had an issue last night where my automatic time zone was adjusted forward one hour, causing my alarm to ring an hour early. A reboot didn't fix it, nor did toggling the "Automatic Time Zone" setting off/on. This same thing actually happened to me a few nights ago where my time jumped an hour ahead, but I caught it before sleeping. A coworker with a VZW S6 even had the same thing happen to him last night also!

Wondering if anybody else has experienced this before and if there is a fix besides VZWSupport's 1) power cycle or 2) power cycle with SIM remove/replace. :p