If one day is not exactly 24 hours and is in fact 23 hours 56 minutes , should n't the error add up , and should n't we see 12 midnight becoming 12 noon at some point in time ?
Is 12:00 -12:59 noon before 1:00 considered still noon or afternoon ? And is 12:00 -12:59 midnight before 1:00 still midnight or the morning ?