Frederich, Eric:
When I make an edit in our Wiki, the dates are 4 hours ahead of time.
I
made an edit at 10:03am and on the recent changes page it says I made that change at 14:03.
Since MediaWiki doesn't know where in the world a particular user is, it will display dates/times in whatever timezone you set in your preferences. Click on "my preferences", then "Date and Time", and check that your personal timezone preference (the offset from UTC) is correct.
Ian