Argument at Work - Any offers??
Is Midnight the start or the end of the day?
ie At 23:55 on 10th March - 5 minutes later would it be Midnight on the 10th March or the 11th March? Any thoughts |
March 11th really, but most people when making an appointment would go for March 10th
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It's the next day I think.
Think of it using a 24 hour clock. March 1st 23:59 March 2nd 0:00 |
agreed, its technically 00:00 on the 11th (rather than 24:00 on the 10th)
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Day begins at 00:00:00 and ends at 23:59:59
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Day begins at 00:00:00 and ends at 23:59:59 Day begins *and* ends at 00:00:00 |
Originally Posted by jlanng
What about the time between 23:59:59 and 00:00:00?
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Those long winter nights..... :D
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As an aside, my microwave appears to work on the 25-hour clock. At 23:59 it ticks round to 24:00, then 24:01 etc to 24:59
Well, it amuses me! |
Sounds like something you bought from Derrick Trotter :D
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Maybe it's setup for Mars? It's day (or Sol) is 24hrs 39mins...
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The time between 23:59:59.9999999 (etc.) and 00:00:00 is infinitessimally small so as to be negligeable. |
Cant do both .....................
Day starts at 00:00:0000000000000000000000000000000000000 old day finished just before. |
When?
What is the gap between 0:00:000000000000000000 and the end of the previous day? None. What's 00:00:00000000000000 minus zero? 0:00:00000000 |
Originally Posted by jlanng
Following your reasoning, 23:59:59.9999999 can be considered as 0:00:00. Therefore each day both starts and ends at 0:00:00.
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at the end of the day................its always midnight lol
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No it doesnt, because by the time you have got to EXACTLY 00:00 you are already on a different day!!! If you want proof that 23:59:59.999999 recurring is the same as 0:00:00 I can provide it |
Originally Posted by jlanng
If you want proof that 23:59:59.999999 recurring is the same as 0:00:00 I can provide it
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I'll save you the trouble then... were you going to use:
1/3 = .33333... 2/3 = .66666 1/3 + 2/3 = 1 therefore: 0.33333... + 0.66666... = .999999... therefore: 1 = .99999... ? ;) |
Is there a site on the net which would give the deffinite answer and the proof, so i can take it to work??
Has GMT got a site |
If so, it is not relevent to this example because we have made a demarkation, a transition point between 2 days.
The definition of that transition is when the 23:... hours changes to 00:... hours. Any time prior to 00:00 hours MUST by definition begin with 23:... and therefore must be the previous day. |
Any time prior to 00:00 hours MUST by definition begin with 23:... and therefore must be the previous day. |
No I wasn't going to use that proof - but it is getting off the point a bit. Here's mine. :D
x = 0.99 recurring 10x = 9.99 recurring 10x - x = 9.99 recurring - 0.99 recurring 10x - x = 9.99 recurring - 0.99 recurring 9x = ( 9 + 0.99 recurring ) - 0.99 recurring 9x = 9 + 0.99 recurring - 0.99 recurring 9x = 9 x = 1 |
Its down to definition. I will concede that the day starts at zero hours and ends when 24 hours have elapsed, however I will not concede that the day ends at the time of day known as 00:00! :D
So Felix, you havn't owned up to what your thoughts are!... |
:)
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My thoughts are that midnight is 00:00 by definition
Therefore 00:00 must mark the start point of the next day Hence midnight is the start of the next day Wouldn't mind some technical site or top proffesor type bloke to put something in writing so i can take it to work |
Wouldn't mind some technical site or top proffesor type bloke to put something in writing so i can take it to work ;) Definition is the key word here. The Gregorian calendar, which we all use, defines midnight as the start of the day. from a US Navy site Start of the JD count is from 0 at 12 noon 1 JAN -4712 (4713 BC), Julian proleptic calendar. Note that this day count conforms with the astronomical convention starting the day at noon, in contrast with the civil practice where the day starts with midnight (in popular use the belief is widespread that the day ends with midnight, but this is not the proper scientific use). |
Set you windows clock to 23:59 and then watch the date change a minute later
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So if I ask you to meet me at midnight on the 10th do you turn up at 2359 on the 9th or do you turn up at 2359 on the 10th, jeez confused myself there :)
At work it is fairly common to put a shift that finishes at midnight on the same day as 2400Hrs and a shift that starts at midnight and runs into the next day as starting at 0000Hrs, Gary |
Midnight is the mid point of the night (6pm to 6am) hence the term MID-night as it happens in the MIDdle point of the night. The term Midnight was not given as to mean the start of a new day only the mid point of the night. In fact a new day does not start at Midnight but at the first measurable point after that which has transpired as being known as midnight ;)
Therefore Midnight should be used in the context of being attached to the day that the night started in, so it would be logical to express midnight as the end of one day date calculating period and not the start of another day. |
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