Q's UPSIDE DOWN gun is pointed at XMAS EVE (X=24th letter too!)
I think I've seen several examples now of a timestamp like 3:58 (present here) being applicable to a date (carry the extra numbers into the following month).
3:58:29 becomes 4:27→ 29 (straddles XMAS EVE on clock).
A lot of signs that THIS is the "WEEK TO REMEMBER" (or one of them anyway).