Cartier hang tag vs warranty card mismatch

[Carterman32]

I purchased a Cartier Santos on eBay, which was authenticated and came with numerous Delugs bands. That would further indicate it was real, because who would buy a number of De Lugs straps for a fake watch. The watch looks relatively unworn, but....

The hang tags say "M date Nov 22" and the warranty card says date "12-30-20." The serial number on the tag and warranty card match. Is this normal to have the date mismatch?