Can they vote for her at 1201am Monday?
Not if Senate Rule 22 (where "cloture" procedure is defined) is followed.
30 hours must elapse after cloture vote, before the substantive vote is taken. Cloture vote is scheduled for Sunday.
Those time intervals - in fact any Senate rule - can be waived on unanimous consent. That won't happen with this nominee.
I wondered the same thing.....