There is no need to neurotically check. Each school sets its own time, but nothing matters until AMCAS gives them the ability to run reports to see who's in and who's out. That could be at 12:01 a.m. or 11:59 p.m. They haven't told us! 🙂
In any event, you should not expect WL calls to start one minute after the PTE deadline. At least not in response to what happens on Monday.
Calls can come at any time. Some schools started making them weeks ago.
Hackensack could start right now, 9:00 a.m. on Monday, or not for another month. Whenever it is, it is not going to be tied to the exact time on Monday that Hackensack is able to access a CYMS report showing who has PTEd and who has not.
Among other reasons, you don't know whether Hackensack is going to immediately dump people who have neither told them they are withdrawing nor selected PTE, or reach out to them to ask whether they are in or out. In fact, most schools do not just automatically dump, although they can, and some certainly do.
Do you have any As right now? Later today I'm going to make a mega-post on the WL support thread sharing some thoughts gathered through 3 years of observation. Please try to chill! 🙂