I have no idea, I can never remember, it makes no logical sense - no, 12 noon is NOT post-meridian, it IS meridian. I usually go 11:59 or 12:01, and then I'm st

I have no idea, I can never remember, it makes no logical sense - no, 12 noon is NOT post-meridian, it IS meridian. I usually go 11:59 or 12:01, and then I'm still not sure if it doesn't put the entire hour in some interdimensional hole where this doesn't make sense.