12am or 12pm?

IceBus said:
Can you tell me how 12:00 can be POST-meridiem?
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Because meridiem would be defined as the exact moment of 12:00:00.000... ad infinitum. In your definition, exactly how long does meridiem last? One second? One minute? It's a dimensionless point situated to mark a transition, not an interim period while everyone gets used to writing PM instead of AM.
 
Castiel said:
You don't need a poll as the answer is categorically 12am is midnight and 12pm is midday.

Anything else is simply wrong.
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From the Royal Observatory website.

http://www.nmm.ac.uk/explore/astronomy-and-time/time-facts/faqs/is-noon-12-am-or-12-pm

12 noon is neither a.m. nor p.m.

To avoid confusion, the correct designation for 12 o'clock is 12 noon or 12 midnight. Alternatively, the 24-hour clock system may be used.

The abbreviation a.m. stands for ante-meridiem (before the Sun has crossed the line) and p.m. for post-meridiem (after the Sun has crossed the line). At 12 noon, the Sun is at its highest point in the sky and directly over the meridian. It is therefore neither 'ante-' nor 'post-'.
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Technically midday is 12:00PM, but it shouldn't be in my eyes because it's stupid to start a clock at 12.

When are we getting metric time again? :p
 
Castiel said:
To all practical purposes 12noon is 12pm, as noon only lasts for the time it remains 12:00:00 (for a practical example of modern timekeeping) as soon a it is 12:00:01 it is no longer Noon, but PM.The same is true of midnight.

I reality Noon would have passed before you had the time to comment that it was accurately noon rather than pm.
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Are you seriously trying to say you're right and the official site of the Greenwich Observatory, where the prime meridian is based, is wrong? You have some ego if you are.
 
Redz said:
Are you seriously trying to say you're right and the official site of the Greenwich Observatory, where the prime meridian is based, is wrong? You have some ego if you are.
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No why would you say that, I made it quite plain that I was referring to the practical application rather than the scientific one.

nothing I said contradicts what the Observatory said, it only expressed the practicality of accurately stating it is noon rather than pm.

12:00:00 is noon, 12:00:01 is pm, or depending on how accurate you wish to get....

12:00:0000 is noon, 12:00:0001 is pm and so on......

Essentially Noon is a single moment in time, it is not a period of time.
 
I use 24 hr clock.

6.30 am is said as "zero six thirty"
12.15 PM is said as "twelve fifteen"
23.45PM is said as "twenty three fourty five"
and midnight, or 12 AM, is said as "zero hundred"

Then again, things are easy in my job :cool:
 
Castiel said:
No why would you say that, I made it quite plain that I was referring to the practical application rather than the scientific one.

Essentially Noon is a single moment in time, it is not a period of time.
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But thats wrong.

You're talking about midday being a point, and 12.00.01 being pm, but that isn't 12pm.

12pm is also a point, all time is a point if you zoom in enough. There is no argument about it, its fact - 12pm/am do not exist, and would only exist as an inaccurate measure of a time before or after midday. Its an indisputable fact. Much easier to say noon or midnight anyhow...
 
I think the confusion comes from the way you end up with 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 for am and pm instead of 12 following 11. That's what always used to get me anyway :o
 
anticonscience said:
So I was talking today with a colleague about SLA levels for response times for a customer who has out of hours support until 12pm Saturday.

This opened a can of worms all over the office with some debate about the time I had said the customer has support for:

Some say 12pm is mid-day, whilst others say 12am is mid-day, so OcUK, if I was to ask you what 12 pm is, what would you say?

Mid-day or mid-night?

Maybe a kind mod would make a poll?
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Sorry this was in an office with computers and not one of you had the Iq to just check it on the clock in the bottom right of the screen?

12am is midnight 12pm is midday.
 
Hudzy said:
I think the confusion comes from the way you end up with 12, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 for am and pm instead of 12 following 11. That's what always used to get me anyway :o
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Exactly, who counts like that?

0:00AM
1:00AM
...
11:00AM
12:00PM
...
23:99PM

Why not?
 
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