please compare it by yourself with the used atomic clockpage. take a bitcointalk thread ( to load less as possible) at see at he atomic page.
i have count a difference of 2 minutes and 17/18 seconds
and to all that have problems with it: bitcointalk ist not a real auction site as ebay. i have done most possible things
oh year, that is a good methode I got 2:15 - so I trust 2:18

But next time, forum time would be do it better, because of the timestamp I think^^
next time i could do it this way...but the first post was allready posted with the real time