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Time is math I think (slrpnk.net)

submitted 1 week ago by ByteOnBikes@slrpnk.net to c/mathmemes

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[-] Successful_Try543@feddit.org 8 points 1 week ago

The most unlogical thing. If it starts at 12 AM, the next hour is 1 PM, right?

No, ante meridiem and post meridiem say whether it's before or after noon, thus, after 12:59 AM comes 1:00 AM.

https://en.m.wikipedia.org/wiki/12-hour_clock#Confusion_at_noon_and_midnight

[-] lnxtx@feddit.nl 8 points 1 week ago

I mean when looking at numbers:
| . | . | . | . | . | . | |

| | 1100pm | 1159pm | 1200am | 1259am | 0100am | ... | | 1100am | 1159am | 1200pm | 1259pm | 0100pm | ... | | 2300~24h~ | 2359~24h~ | 0000~24h~ | 0059~24h~ | 0100~24h~ | ... | | 1100~24h~ | 1159~24h~ | 1200~24h~ | 1259~24h~ | 1300~24h~ | ... |

Too much confusion.

Even NIST (National Institute of Standards and Technology in the US) suggests:

To avoid ambiguity, specification of an event as occurring on a particular day at 11:59 p.m. or 12:01 a.m. is a good idea, especially legal documents such as contracts and insurance policies. Another option would be to use 24-hour clock, using the designation of 0000 to refer to midnight at the beginning of a given day (or date) and 2400 to designate the end of a given day (or date).

[-] Successful_Try543@feddit.org 6 points 1 week ago* (last edited 1 week ago)

I didn't want to imply that the use of the 12 hour system should be prefered in any way. Just that the division into AM and PM follows some logic. Its just the numbering 12, 1, 2,... that's weird.

[-] lnxtx@feddit.nl 2 points 1 week ago

I like your reply. I think it's a source of all problems.

this post was submitted on 23 Mar 2025

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