Yes, if you did hard reset, it change your time ... just go settings to put a proper date (settings - date+time - disable automatic set first, to do it and after you have done it, re-enable it) ...
1) Turn off automatic time zone
2) Select your time zone
3) Set current date
4) Set current time
5) Turn off day light savings if on
6) Check current date and time
7) Restart phone.