As I stated there is only one time spelled out in the PWA that dictates the when and how a pilot has to check their schedule.

The situation you are referring to should actually say when coming off a “non fly day” because that is what the PWA says.

Yes an X day is a non fly day, but so is rest > 24 hours and so is a PB/PR day.

The company can’t dictate that you interrupt your X day or rest, but you can do it if you want.

But how and when a pilot “makes themselves aware” is up to each pilot.

Can they check at 11:59 hours prior? Yes..great technique if they want to take a screen capture.

Can they wait until zero hour of starting LC (could be midnight for X day, could be some other random time for PB/PR day)? Yes.

Could they wait until their morning coffee because they live local and know they can make a 1000 report? Yes.

Different strokes (sched “checks”) for different folks.