I expected the “reference” one “this satisfies my other criteria” but “The photo is at least 1px by 1px” is my favorite of all of the “clever” ones so far.

Can you provide an example of a shot which satisfies “The photo is at least 1px by 1px” but does not satisfy “The photo was posted between midnight and 23:59” or vice versa?

A photo posted at 23:59:30 of 2px by 2px would meet one criteria but not the other.

A picture of 0px by 0px posted at 20:25:15 would meet one criteria but not the other.

The upload log (i.e. when the shot was posted, not when the snap was posted, as criteria are satisifed by shots not by snaps) only shows date and time to the nearest minute, so it is impossible for a photo to be posted at 23:59:30

I also believe it is impossible to upload a 0x0 shot

Josh has pointed out on the discord that you can see the second where shots were uploaded