Originally Posted by Bensky13

I occasionally fly out of LGA Terminal C ~9:30PM on Sundays, and I've never seen dedicated PreCheck open at that time. I asked once when they close it, and was told 8PM. They'll give you the flimsy paper sheet that grants you "PreCheck lite"

Of course, at that time there aren't that many flights, so I've never had more than a few minute wait at security.