Australian Politics Forum - 12:00 pm or Noon?

lee Gold Member Offline Australian Politics Posts: 21218 Gender:	Re: 12:00 pm or Noon? Reply #45 - Jul 11^th, 2026 at 5:46pm Bobby. wrote on Jul 11^th, 2026 at 5:09pm: 12pm is noon by definition. No by convention. AFTER noon is PM. Noon is not.
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Sir Eoin O Fada

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Re: 12:00 pm or Noon?
Reply #46 - Jul 11^th, 2026 at 5:57pm

lee wrote on Jul 11^th, 2026 at 5:46pm:

Bobby. wrote on Jul 11^th, 2026 at 5:09pm:

12pm is noon by definition.

No by convention. AFTER noon is PM. Noon is not.

And the convention is wrong, all times on the conventional 12 hour clock are either post meridiem or ante meridiem except noon which is the meridiem.
Logically it cannot be before or after itself.

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Gnads

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Re: 12:00 pm or Noon?
Reply #47 - Jul 11^th, 2026 at 6:00pm

Bobby. wrote on Jul 11^th, 2026 at 11:36am:

Gnads is wrong:

On a 24-hour clock, when the time transitions from 23:59, the day is over.

The clock then rolls over to 00:00 to start a brand new day, and the very next minute is 00:01.

The sequence runs as follows:23:59 (the final minute of the day)00:00

(midnight, the beginning of the next day)00:01 (the first minute of the next day)

https://en.wikipedia.org/wiki/24-hour_clock

The modern 24-hour clock is the convention of timekeeping in which the day runs from midnight to midnight and is divided into 24 hours. This is indicated by the hours (and minutes) passed since midnight, from 00(:00) to 23(:59), with 24(:00) as an option to indicate the end of the day. This system, as opposed to the 12-hour clock, is the most commonly used time notation in the world today,[A] and is used by the international standard ISO 8601.[1]

No I'm not dickhead.

In any system - Air traffic control, train control. rostering systems than work on a 24 hour clock ....

the systems do not recognise a time of 00.00 or 24.00.

the last time for a day is 23.59 hrs & the first time of the new day 00.01 hrs.

There is no such time as 24.00 hrs.

I worked within that system for 40 years in rail.

You wouldn't know shyte from clay.

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Gnads Gold Member Offline Australian Politics Posts: 33577 Gender:	Re: 12:00 pm or Noon? Reply #48 - Jul 11^th, 2026 at 6:06pm greggerypeccary wrote on Jul 11^th, 2026 at 11:43am: Bobby. wrote on Jul 11^th, 2026 at 11:36am: Gnads is wrong: Indeed. 12pm is noon. I did not say it wasn't. So indeed that Peccarhead.
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Gnads

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Re: 12:00 pm or Noon?
Reply #49 - Jul 11^th, 2026 at 6:08pm

Bobby. wrote on Jul 11^th, 2026 at 12:29pm:

Leroy wrote on Jul 11^th, 2026 at 12:26pm:

Sir Eoin O Fada wrote on Jul 11^th, 2026 at 12:20pm:

Bobby. wrote on Jul 11^th, 2026 at 11:53am:

12pm is noon.

- it stands for post meridiem.

Similarly, the counterpart to noon is 12 a.m., which stands for ante meridiem (meaning "before midday") and is used for midnight. Because the clock resets exactly at the meridian (midday), many people avoid 12 a.m. and 12 p.m. altogether to prevent confusion, preferring to just use "midnight" or "noon"

How can 12 hours after noon be noon, not logical.

So at lunchtime it's 12am then after that it's 12:01 pm. I always thought at midnight it's 12am then 12:01 am.

Lunchtime is 12pm. Roll Eyes

Lunchtime is midday - dickhead.

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Gnads

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Re: 12:00 pm or Noon?
Reply #50 - Jul 11^th, 2026 at 6:12pm

greggerypeccary wrote on Jul 11^th, 2026 at 1:00pm:

There are no official standards established for the meaning of 12am and 12pm, but it is generally accepted that 12am means midnight and 12pm means midday.
The ‘am’ and ‘pm’ stand for ante meridiem and post meridiem – Latin words meaning ‘before the middle of the day’ and ‘after the middle of the day’.

When the clock hits 12:00:00, you have hit ‘meridiem’. So all times before that are ‘ante meridiem’ within the same day, and all times afterwards are ‘post meridiem’, up until the clock hits midnight and a new day begins.

By the time you have seen a clock showing 12:00 at midday it is already post meridiem, and similarly at midnight it is already ante meridiem.

Not until it 1 second past 12 is it post meridiem.

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Gnads Gold Member Offline Australian Politics Posts: 33577 Gender:	Re: 12:00 pm or Noon? Reply #51 - Jul 11^th, 2026 at 6:15pm tallowood wrote on Jul 11^th, 2026 at 4:53pm: 24-hour clock is less ambiguous.
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Sir Eoin O Fada Gold Member Offline Australian Politics Posts: 3748 New England, NSW Gender:	Re: 12:00 pm or Noon? Reply #52 - Jul 11^th, 2026 at 6:18pm Saying ‘’12 pm is noon’’, is saying that 12 hours after noon is noon.😀😃😀😃😀😃😀. I’ll bet that some people still think that 2026 AD is the 27th year of the millennium.
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lee Gold Member Offline Australian Politics Posts: 21218 Gender:	Re: 12:00 pm or Noon? Reply #53 - Jul 11^th, 2026 at 6:24pm Sir Eoin O Fada wrote on Jul 11^th, 2026 at 5:57pm: And the convention is wrong, all times on the conventional 12 hour clock are either post meridiem or ante meridiem except noon which is the meridiem. Noon is the meridiem. It is not Post (after) Meridiem.
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Yadda

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Re: 12:00 pm or Noon?
Reply #54 - Jul 11^th, 2026 at 9:18pm

Sir Eoin O Fada wrote on Jul 11^th, 2026 at 8:27am:

Why do people use 12:00 pm when the actual time meant is Noon?

Just my 2 pence worth.....

Designating noon......as 12:00 pm is correct.

e.g.
Q.
Is one minute before noon, stated as 11.59 am....correct ?

Of course it is.

And is 12.07 pm [in the afternoon] a correct designation ?

Of course it is.

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Sir Eoin O Fada

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Re: 12:00 pm or Noon?
Reply #55 - Jul 11^th, 2026 at 9:38pm

Yadda wrote on Jul 11^th, 2026 at 9:18pm:

Sir Eoin O Fada wrote on Jul 11^th, 2026 at 8:27am:

Why do people use 12:00 pm when the actual time meant is Noon?

Just my 2 pence worth.....

Designating noon......as 12:00 pm is correct.

e.g.
Q.
Is one minute before noon, stated as 11.59 am....correct ?

Of course it is.

And is 12.07 pm [in the afternoon] a correct designation ?

Of course it is.

Of course they are, it’s 1 minute BEFORE the meridiem and 7 minutes AFTER the meridiem, which is noon [or 12 noon] which is neither ante nor post, it just is, however 12:00pm is 12 hours post meridiem [12 hours PAST noon] which is midnight.

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« Last Edit: Jul 11^th, 2026 at 9:44pm by Sir Eoin O Fada »

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Leroy

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Re: 12:00 pm or Noon?
Reply #56 - Jul 11^th, 2026 at 11:42pm

Sir Eoin O Fada wrote on Jul 11^th, 2026 at 6:18pm:

Saying ‘’12 pm is noon’’, is saying that 12 hours after noon is noon.😀😃😀😃😀😃😀.

I’ll bet that some people still think that 2026 AD is the 27th year of the millennium.

Saying "12pm is noon" means that its 12 o'clock when the sun is passing its highest point and anytime after that exact time is post meridium, so in the 12 hour cycle any time regarded as PM means the 12 hour cycle starts at 12pm and the time on 12 hour cycles ending in AM start from 12am midnight,

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Marla Gold Member Offline A joint a day keeps the MAGA away Posts: 15002 Colorado Gender:	Re: 12:00 pm or Noon? Reply #57 - Jul 11^th, 2026 at 11:45pm lee wrote on Jul 11^th, 2026 at 5:46pm: Bobby. wrote on Jul 11^th, 2026 at 5:09pm: 12pm is noon by definition. No by convention. AFTER noon is PM. Noon is not. "Time is ticking This theory is false, time does not tick, clocks do but not time.
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Leroy

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Re: 12:00 pm or Noon?
Reply #58 - Jul 11^th, 2026 at 11:48pm

Marla wrote on Jul 11^th, 2026 at 11:45pm:

lee wrote on Jul 11^th, 2026 at 5:46pm:

Bobby. wrote on Jul 11^th, 2026 at 5:09pm:

12pm is noon by definition.

No by convention. AFTER noon is PM. Noon is not.

"Time is ticking This theory is false, time does not tick, clocks do but not time.

Ticking represents time though. The time bomb is ticking.

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Marla

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Re: 12:00 pm or Noon?
Reply #59 - Jul 11^th, 2026 at 11:50pm

Bobby. wrote on Jul 11^th, 2026 at 4:45pm:

Marla wrote on Jul 11^th, 2026 at 4:34pm:

No Blooby, not everyone.

Not you.

He was an astronomer amongst many other things:

https://en.wikipedia.org/wiki/Christiaan_Huygens

Christiaan Huygens,[a] Lord of Zeelhem (14 April 1629 – 8 July 1695) was a Dutch mathematician, physicist, engineer, astronomer, and inventor who is regarded as a key figure in the Scientific Revolution.[4][5] In physics, Huygens made seminal contributions to optics and mechanics, while as an astronomer he studied the rings of Saturn and discovered its largest moon, Titan. As an engineer and inventor, he improved the design of telescopes and invented the pendulum clock, the most accurate timekeeper for almost 300 years. A talented mathematician and physicist, Huygens authored the first modern treatise where a physical problem was idealized using mathematical parameters, while his work on light contains the first mathematical and mechanistic explanation of an unobservable physical phenomenon.

Yes Blooby, what did he invent?

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