Post YFW you see 12am/pm refer to noon/midnight : r/ISO8601

If PM means 'after noon', shouldn't 12:00 PM actually be 0:00 PM? It's not twelve hours after noon. - Quora

Midnight and Noon—When to Use A.M. and P.M.

Noon and Midnight: AM or PM? - Writing Explained

Support for midnight or 24:00 is missing · Issue #395 · moment/luxon · GitHub

Is 12:00 PM and 00:00 AM the same (which is both midnight)? Similarly, is 12:00 AM and 00:00 PM the same (which is both noon aka midday)? - Quora

Decoding the Meaning of '11:59 PM UTC-12:00' as Deadline

Post YFW you see 12am/pm refer to noon/midnight : r/ISO8601

Noon is not 12am. Midnight is not 12pm. Code appropriately.

Is 12:00 PM and 00:00 AM the same (which is both midnight)? Similarly, is 12:00 AM and 00:00 PM the same (which is both noon aka midday)? - Quora

Is midnight 12:00 a.m. or 12:00 p.m.?

Midnight and Noon—When to Use A.M. and P.M.

If PM means 'after noon', shouldn't 12:00 PM actually be 0:00 PM? It's not twelve hours after noon. - Quora