Time is relative depending on where you are in the world.
On here there is 'forum time', which is set to GMT with daylight savings. Internally all posts are stored using this time zone.
You can (and possibly have when registering) set your own time offset so the post times are converted to your local time.
Check the setting on your profile here, and edit as required if you're not seeing your local time reflected in posting times. For reference, I'm posting this at 10:46am on Monday 20th October 2014:
http://www.accidentalsmallholder.net/forum/index.php?action=profile;area=themeHTH.