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  #1  
Old 21st December 2016, 06:45 AM
lsatenstein Online
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How do you write thirty minutes after noon and midnight

I was watching a late show on TV that ended at 00:30, and the station posted the time as 12:30am.

If we use the digital clock, my answer is logical 00:30

It struck me that with AM/PM we abhor zero hours. Noon becomes 12:00pm
12:30pm is thirty minutes past noon.

I started to question "On Dec 20 as the clock rolls around to 12:30am, is it really December 21st at 30 minutes past midnight? To which day does midnight belong?

Whats wrong with 00:30pm as 30 minutes past noon, for those who want to count hours modulo 12. ?
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  #2  
Old 21st December 2016, 08:27 AM
antikythera Offline
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Re: How do you write thirty minutes after noon and midnight

if it were still 20th December the time would be 24:30. days are long enough already without an extra hour.

12:30pm makes more sense because you are half way through the day as does 12:30 in the 24h format, going back to zero in the middle of the day doesn't.

some public service providers use the 12h clock for their timetables and appointment systems for the same reason as the tv station still purely because certain people who haven't learnt 24h format time keeping.
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Old 21st December 2016, 08:28 AM
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Re: How do you write thirty minutes after noon and midnight

Midnight doesn't 'belong' to anything, since the duration is zero.
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Old 21st December 2016, 09:56 AM
Dutchy Offline
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Re: How do you write thirty minutes after noon and midnight

am/pm is a s-h-i-t standard: https://en.wikipedia.org/wiki/12-hou...n_and_midnight
Nobody should use it.
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Old 21st December 2016, 10:01 AM
antikythera Offline
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Re: How do you write thirty minutes after noon and midnight

I agree entirely Dutchy and would like to see use of it phased out altogether (including the timestamps for posts on this forum)
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Old 21st December 2016, 11:21 PM
ocratato Online
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Re: How do you write thirty minutes after noon and midnight

I think the problem arises from confusing the underlying concept of time with the instrument for measuring it - the clock.

If I asked someone the time a few minutes ago they would probably have replied "10 o'clock". This is a contraction of the phrase "10 of the clock". They would be telling me what a clock looks like. Similarly, a time like 12:30 is just a shorthand for describing what an analogue clock looks like - it has its hour hand near 12 and the the minute hand showing that 30 minutes have elapsed in the current hour.

We should not confuse the indicators on an instrument for the thing that it is trying to measure.

If I am looking at a live feed of Big Ben it would currently show 11:15, and the fact that it is dark, implies 11:15PM. However the time (for me) is still 10:15AM - I have to interpret the measurements on the clock to get to the time.

Consider the fuel gauge on my car - it currently shows a little over half. What does that mean - that I have just over 30 litres of fuel, that the cost of filling up will be about $50, that I can drive another 300Km, or that I should schedule a fuel stop in the next two hours ? The instrument measures some physical quantity, but it is still up to us to interpret what that reading means.
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Old 22nd December 2016, 12:47 AM
lsatenstein Online
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Re: How do you write thirty minutes after noon and midnight

Quote:
Originally Posted by flyingdutchman View Post
Midnight doesn't 'belong' to anything, since the duration is zero.
Best answer

it is 1/infinity - 1/infinity. And gains importance as we get infinitesimally close to that mythical end of day/start of day.
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Old 26th December 2016, 10:04 AM
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Re: How do you write thirty minutes after noon and midnight

Clocks are just an evil invention to enslave the human race.

Humans are taught to think that time runs only one direction... from the past to present and into the future. But.. What if time is constantly changing? What if it runs in all directions at once?

Blah.. It's getting late and past my bedtime.
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  #9  
Old 26th December 2016, 12:49 PM
ocratato Online
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Re: How do you write thirty minutes after noon and midnight

As the song says - "time keeps slipping into the future".

In some of the Sci-Fi I watch there is occasionally someone/something that wants to leave our space-time into a place where there is no time. I don't really understand what they expect to find when the get there - it is really hard to think about a place without time.

I also note that some cosmologists are thinking that time (and space) are actually just emergent properties of a deeper reality.
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  #10  
Old 26th December 2016, 04:06 PM
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Re: How do you write thirty minutes after noon and midnight

It's too early for Steve Miller references..

Actually, it's never too early, but, what the heck.,.. It's too early
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