Ahhh, Now I've got it. (been a long day)

Sorry, we're not privy to that kind of manipulation. The time stamp is fixed in the PHP code. No way to slide one in.The only way I know how to do that would be for you to delete the gallery postings after the modeled one, post the 3rd one in the series, and then repost the following imagery.

The drawback to this method is you'll lose all the comments in these images.

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Ockham's razor- It's that simple