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Re: Sexagesimal (was Newbie - Variation..)
From: John Simmonds
Date: 2002 Feb 20, 16:36 +1000
From: John Simmonds
Date: 2002 Feb 20, 16:36 +1000
Actually .. in military 24 hour time format ... midnight does not exist for exactly that reason, what day is it Time jumps from 235959 to 000001 cheers , John At 15:20 19/02/2002 -0400, Trevor Kenchington wrote: >Lu, > > > Hey, while we're at it, why don't we debate 0000 vs 2400? > >That's a matter of convention. Subject to correction by the >better-informed, I think the convention is 0000. > > > And, for a more esoteric question, does midnight belong to the earlier or > > later of the days it separates? > >Midnight is instantaneous and so an infinitely-thin line in time, >separating the two days but belonging to neither -- or so it would seem >to me. However, if you designate it 0000, then it must be 0000 of the >following day. If it were otherwise, 0000 would occur 23 hours and 59 >minutes after 0001 of the same calendar day, which wouldn't make any sense. > > > But, wait, there's more! Is noon 12AM or 12PM? What about midnight? > >Noon cannot be "ante-meridien" nor "post-meridien" since it is >"meridien" itself. (Hope I have the Latin spelling right. High school >was very long ago!) Hence it must be "12 noon", not "12am" nor "12pm". >But if you really want to give it one designation or the other, it would >have to be "12am" since it follows one minute after 11.59am. > > > All but the first are very important to me in programming my VCR when I > > want to record a program starting at midnight. > >Well for _that_ you don't need the correct definitions, just whatever >mixed up ones the software designers used! As with entering deviation in >some brands of GPS, you just need to know enough to be able to work out >the answer you want and then experiment until you can get the equipment >to give you the same result. > > > I just program the damn > > thing to start at 12:01 AM, on that there is at least universal agreement > > as to time and day. ;-) > >I set mine to 2345 and so allow for errors in clock settings -- whether >in my VCR or the TV station's machinery. It's not elegant but it works >for me. > > >Trevor Kenchington > > >-- >Trevor J. Kenchington PhD Gadus@iStar.ca >Gadus Associates, Office(902) 889-9250 >R.R.#1, Musquodoboit Harbour, Fax (902) 889-9251 >Nova Scotia B0J 2L0, CANADA Home (902) 889-3555 > > Science Serving the Fisheries > http://home.istar.ca/~gadus "Live every day like it may be your last .... because one day it will be"