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Neither has anything intrinsic in its favour. Comments about "blithering idiots" just show what a narrow outlook you have.
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FYI, the year 1600 one is probably related to the fact that the Windows epoch is 1/1/1600. In some ways this is rather more natural than 1970, because it falls right on a 400-year boundary, which is the length of the leap-year period.
(Of course, leap seconds presumably throw a wrench into that argument. :-))
I would dispute that, for the reason that someone said earlier. Noon as "12pm" means that the AM->PM change happens at exactly 12:00. Noon as "12am" means that it changes from AM to PM at 12:01PM. Oh wait, I mean 12:00:01PM. No, I mean 12:00:00.00000000000000000001PM. (All of which are pretty unequivocally "PM" IMO.)That said, yes: use "noon" or "midnight" for clarity if possible.
("ullamcorper"? What kind of CAPTCHA is that?)
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So if someone treats those times as if it were 1974, they wouldn't be a blithering idiot?
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So by "There is no 12:00 AM or 12:00 PM," you mean "It confuses me, so everyone should do it my way."
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Everyone should follow my standard!
Cue the XKCD...
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Yep, there's an 'instant' when it's noon, so not am or pm, but just m (which, apparently, used to be used - ie 12m was noon).
But for the other 99.9999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 etc % of the time, it's pm
(But then, I suppose that since 0.99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 etc = 1, then you're right, so I apologise)
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One simple comment:
If you have the time, We've got the beer.
This completes our news update, we now return you to your regularly scheduled program.
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You'd rather they spit?
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24 hour clock? Phhh? Who counts in 24s?
Replace it with a 20 hour day and you've solved all kinds of problems.
And noon will be 0. Why? Because it makes sense to count from the point when the sun is directly overhead instead of starting from the middle of the night when nobody knows what fucking time it is.
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You'd rather they just let it just spill out all over the place? It can be very difficult to clean up.
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Wait, what was military time again?
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If you want to replace the current system in favor of nice units, why stop with 20? Why not just use 10 or 100? There's no advantage to making a system that's kind of like the old one.
For that matter, why not just switch to Internet Time?
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Screw that.
....................
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Do you have it written on a piece of paper?
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I vote if we change the time units, we also change the word "time" to something else, and keep time zones. There's no way I'm going to work at 3 splortches past 5 in the morning just so the Europeans can start work at 9TM
Yeah - we'll need to change the whole AM/PM thing to simply "TM" because a large corporation with a fruity logo will inevitably patent it after "inventing" it 6 months after everyone else starts using it.
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Screw that.
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On the contrary... if you start firing your arrows at philosophers instead of tortoises, the world becomes a much simpler place...
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His examples are bad - it should indeed be year/month/day order - but he's correct about 24:00 being valid. It's just a convenience thing, and a common case would be for interval measurements - a period covering 23:30 to 24:00 on the 14th is easier to deal with than one that ends on a different date.
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I'm hardly confused. I just know Latin and time-keeping. 12:00 Noon is the meridiem, or middle of the day. Ante is before, post after. So 12:00 PM means it's the middle of the day, but after.
http://en.wikipedia.org/wiki/Meridiem#Confusion_at_noon_and_midnight
Now, one might argue, "it's easier" to make 12:00 Noon = 12:00 PM. And I would tend to agree. And in a time when computers and displays had limited memory and display, it perhaps made sense to be a bit sloppy.
But neither of those are true today, so why not err on the side of accuracy (I can guarantee no one in their right mind thinks 12:00 Noon is in the middle of the night. Though as I understand it, some starry-eyed people do consider it the start of the day ;-)
CAPTCHA - damnum - DAMNUM it was easy to derail this thread!
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David should really screw with them and submit a payment of £-0.01 - they'll go nuts trying to figure out what to do with he .01 credit on his account!
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Why do people keep posting these? Retail stores will price a unit out of the market if it doesn't have any stock as no idiot will pay that price for it. Simple. Not and error and certainly not worthy of going on here.
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Years ago, I wrote the first system used in the US to issue photo radar traffic tickets. If the infraction was recorded at noon (to the second), it was issued as 12:00:00 M with M meaning "meridian". One second earlier was 11:59:59 AM and one second later was 12:00:01 PM.
The one time the infraction was actually recorded as being at noon, the recipient of the ticket complained that it was obviously not midnight because it was clearly daylight on the photo. That prompted a quick call from the court for me to explain the 'M'. I guess the explanation sufficed because they never asked for it to be changed.
When entering the time in the system, you could enter a time of "12:00:00 M" by just entering "M".
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Years ago, I wrote a system that used a calendar with Texas Independence Day as day 0. The reason was that it had to be able to show birth dates with no ambiguity.
The selection of Texas Independence Day was made because I thought it highly unlikely that anyone receiving a photo radar ticket would have been born on or before March 2, 1836. As far as I know, my assumption was entirely correct.
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The Windows epoch is actually 1601-01-01 00:00:00 UTC, which is why the date shown is 1600-12-31 16:00:00. This date is typically taken to mean "never", so HyperV is saying that it never saw the machine being created...
CAPTCHA: appellatio - Tempus autem est appellatio
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The Philadelphia transit agency's paratransit service uses times greater than 2400. At one time I had a job where my shift was 4 pm to 2 am. For some reason the service's computers couldn't cope with an itinerary spanning more than one day. So my trip home from work was entered into the system as 2630.
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Back in the days when analogue clocks were the norm, a different view prevailed. Times were expressed relative to the nearest hour, so any time after 11:30 you'd talk about "twenty five to twelve", "twenty to twelve" etc. (I rather liked the Austrian way of saying (and my spelling may well be wrong here) "Drei viertel funf" - which means three quarters of the way around towards five o'clock, or quarter to five.)
If you are thinking about your times this way, then exactly half the times which reference 12 are a.m. and half are p.m, with the one oddity being 12 noon itself which is neither.
The logic then seemed to go that the hours of the day were:
1,2,3,4,5,6,7,8,9,10,11,12 a.m. 1,2,3,4,5,6,7,8,9,10,11,12 p.m.
If you don't think of it in terms of a digital display (and why would you, before they commonly existed?) it would be really odd to classify your hours as:
12,1,2,3,4,5,6,7,8,9,10,11 a.m. 12,1,2,3,4,5,6,7,8,9,10,11 p.m.
That's not how people count!
And when digital watches first appeared they were regarded as being momentarily wrong at noon because they showed 12 p.m. when it should have said 12 a.m. It was seen as lazy programming, but justified because they were only wrong for an instant.
As I said before, neither 12 a.m. nor 12 p.m. has anything absolutely in its favour for describing 12 noon. Both are wrong, but both have been commonly used for the purpose.
Indeed yes.
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By equally flawerd logic, I could suggest that: 1AM, 2AM....11AM, 12AM, 1PM....11PM, 12PM, 1AM implies that midnight must be PM and Noon must be AM (and yes, that would mean the whole hour from noon would still be AM).
Also, for the dicks talking AM = Hours before noon and PM = hours after I think you don't understand how a clock goes... if that were really the case, we'd have: .....3AM, 2AM, 1AM, Noon, 1PM, 2PM, 3PM...... while AM=before noon and PM=after noon, it's not a count....
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but then to make life difficult, we decide a working day is 7.5 hours - that'll fuckj things up nicely, thank you very much (yes, that's a bit TIC - I know it's an 8 with a meal break).
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[quote user="John"][quote user="Evan"][quote user="John"]Neither has anything intrinsic in its favour.[/quote]I would dispute that, for the reason that someone said earlier. Noon as "12pm" means that the AM->PM change happens at exactly 12:00. Noon as "12am" means that it changes from AM to PM at 12:01PM. Oh wait, I mean 12:00:01PM. No, I mean 12:00:00.00000000000000000001PM. (All of which are pretty unequivocally "PM" IMO.)[/quote] Yes, but you're looking at things entirely from the point of view of one using a digital clock.
Back in the days when analogue clocks were the norm, a different view prevailed. Times were expressed relative to the nearest hour, so any time after 11:30 you'd talk about "twenty five to twelve", "twenty to twelve" etc. (I rather liked the Austrian way of saying (and my spelling may well be wrong here) "Drei viertel funf" - which means three quarters of the way around towards five o'clock, or quarter to five.)
<snip> [/quote]Indeed yes.[/quote]I think it's not just Austria - I think that's reasonably broad in Europe (read: I know at least one other small country that's similar).
It causes me some confusion, because my partner (whose origins are mainly English) uses "half three" to mean "three-thirty", whereas my European background thinks of "half-three" as "two-thirty" (ie halfway around to three)
I also agreed with most of the rest that you wrote, but it was long.
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I had to add a schedule to a monitoring program. Each event in the schedule had to have a start date-and-time and end date-and-time, to the minute, so of course specified 24-hour time. To resolve the end-of-day issue, their specification defined that each time could be in the range 00:01 to 23:59 "to avoid ambiguity", which of course put two minutes around midnight into limbo. Instead, I proposed slightly different definitions for the start and end times. The start time could be anything from 00:00 to 23:59. The end time could be anything from 00:01 to 24:00. That resolved the whole "beginning of the day" and "end of the day" issue - and all the users appreciated the lack of ambiguity.
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Right or wrong, that's the way the President's daughter did things back then
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We should all switch to NewPix
http://xkcd-time.wikia.com/wiki/Newpix
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Shades of "123199" as "no expiration date" for a credit card or "forever" for file retention. I realize most of you are too young to remember the very real panic when the people in suits were finally made aware of the Y2K problem, but still....
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Other industries, especially non-financial ones, might be able to evade this a bit, but it's worth looking back in history, specifically to the late 1850s / early 1860s in the UK. Forms (printed in ink on minced trees, so a bit harder to update...) were issued in the 1850s by UK government agencies that had to be altered when used in 1860, because they featured things like: "Date of ${event}: 185___".
Learning from our mistakes appears to be simultaneously our most valuable ability, and the one we make the least use of.
Admin
The whole AM PM thing is annoying, I always forget which one is which, just use morning and evening, atleast not abbrevations, or a 24 hour clock.
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The Japanese have 25:00 up to about 30:00 in their TV schedules, to indicate programmes that are in the small hours after midnight on a particular night. (example)