Django, your time starts when the pic is posted.
Traditionally, the tag location is revealed with the grab. If you don't post within the time frame (6 hrs) then the previous poster/grabber puts up a NEW tag.
Thus the current tag wouldn't be the tower but what but whatever Frenchy decided to post. Basically the game is on hold until a new tag is put up.
Now that is how the statewide game is played. I read the rules and that's what they mean to me if you upstaters are doin' it differently sorry to meddle in your affairs.