The site time seems to be some seconds (30-45) late off the times in my house, but everytime I make a post and look at the post above it, it says "10 minutes ago" or "7 minutes ago".
I understand, but it goes off of seconds so if u posted at 2:20 and 58 seconds, at 2:31 and 0, it will be considered 10 minutes ago... Up until the 58th second.