Does everyone know that you can set your time zone? If your posts are off by hours (not minutes), it is likely that you have the incorrect time zone selected. Right now, it is 10:20 AM EDT for me. If I post this and then look at it and it says 7:20 AM, then I would know that I have this Forum set so that it thinks that I am in PDT. If it says 9:53, that is a different issue.
Unless you were posting from somewhere in the mid-Atlantic, the time on your post is DEFINITELY later than you actually posted. I am in the Eastern US zone and the time on you post will not occur here for more than 2 hours from now. I am actually posting this at 10:33 AM EDST. June 20.
Edited to add: And, the time stamp showing on my post is 4 hours later than actual post time.