fireflybob, your last two paragraphs are incorrect
for a LAPL, which is what this thread orignally covered.
As already said, unlike Class Ratings on other licenses, the LAPL has no specific expiry date and instead has a rolling validity.
The differences between Revalidation requirements for Ratings are in my - unofficial but heavily reviewed - table here (hopefully link works after recent Dropbox changes):
https://www.dropbox.com/s/49r8nvlvpt...E_1-4.pdf?dl=0