There's actually games going holiday sale late (even with much later expire dates)

Not sure how many knew of this but there's been things coming on sale that go on later than the sale's last day. Just today the Carpe Fulgur trio went on sale for 66% off with a end date of the 28th of Jan.

I'd have to look around to remember what else went on sale later though I remember a few thigns ending the 6th (4 days after the main sale ends)