Are your day/time settings set to automatic or manual? If set to auto, try setting the time manually. Samsung phones are notorious for this issue. I'm in the Atlantic Time Zone Canada and Sammy phones are always set to AST South America and messes the clocks up.
The odd time this can be a software glitch, but usually the switch to manual can fix it.
Settings > Date and Time > uncheck auto network settings > set time/time zone accordingly.
Let me know if this works.
Sent from my Nexus 4 using AC Forums mobile app