Hi, Shel_Sri you're welcome and thanks for writing!

To answer your first question, no it is not more recent, but I analyse imagery more holistically than just the capture date. I likely cross-referenced some other useful imageries I found in the wayback.

For the second, I am going to refer you to this great diary about using the sources I did here. https://www.openstreetmap.org/user/Deane%20Kensok/diary/397014 also I have provided some instructions on tasks I've invalidated in #32710 with the offset to use etc.