as per https://www.nist.gov/pml/time-and-frequency-division/times-day-faqs, 12 a.m. and 12 p.m. are ambiguous and should not be used when measuring, thinking, or talking about time. all the other hours are fine.
as per https://www.nist.gov/pml/time-and-frequency-division/times-day-faqs, 12 a.m. and 12 p.m. are ambiguous and should not be used when measuring, thinking, or talking about time. all the other hours are fine.