Wow! So glad this was seen and so much work done sifting through these rabbit holes! Huge thanks!

I was looking into doing something with timestamp related stuff just yesterday -

Hoping to get some code put together that will basically:

find post_last_modified_time, If post_last_modified_time less-than 12 hours ago, show post_featured_image, else show standard-too-late-image

With the new api hooks in next release, I wonder if that kind of code would be best / easiest / fastest to execute using the unix machine time I am guessing?