Why do all periods of 24 hours, end in the word 'day'?
349021
Because a 24 hour period is a day, it's simple to refer to the days of the week as Monday, Tuesday etc.  The first part of the name does have meaning of some sort, though I'm not sure what, I think some of this goes back to the Ancient Roman era.
401082
1 day = 24 hours = 48 cell divisions\n\n3 x (2 to the 48th power) = 844,424,930,131,968 cells
287692
There is only 24 hours in a day, add a women and whats left?
911861
No, there is  24 hours over the period of 4 years which we dont account for on a daily basis but it gets added to our calender every 4 years & that year would be called a leap year. The day it falls on would be 29th February which will not be present for the other 3 years.
1118626
The first day of your period is day one.
1115547
Primarily to provide consistency in what a certain time means everywhere.   Your day starts in the AM and ends in the PM.    We're all on the same 60 minutes, so ultimately it's not that difficult.
121556
Because there are 24 hrs in a day, but 12 hr on a clock.
384747
The day is being calculated in another server. Your time zone may be different. Try after some time
1094366
Great question!  To me, this means when Tuesday ends and Wednesday begins.  I think that's because I think of this time as Tuesday night.\n\nMy native language is English (I'm American.)\n\nI know that the new day starts at 12:00 am, so if I were hearing this in an official context, I would believe it meant the time when Monday became Tuesday.  I think there are other strategies for circumlocution that avoid this problem.
1177057
Twenty-four-hour days, originated from ancient Egyptian sundials that divided the daylight into 12 equal segments. Sixty-minute hours and 60-second minutes are are from the ancient Mesopotamian sexigesimal numbering system, or base 60.\n     after the French Revolution the new government implemented  a decimal time system, or base ten. The french idea never took root and so we still have what we have today.\n \nneat question thanks for asking\n\npeace to you,\n\nBondservant
890302
The 12-hour clock is a timekeeping convention in which the 24 hours of the day are divided into two periods called ante meridiem (a.m., from Latin, literally "before midday") and post meridiem (p.m., "after midday").\n\nTaken from wikipedia at:\n\nhttp://en.wikipedia.org/wiki/12-hour_clock
86364
This was followed in almost all the languages as per astronomy.\nSunday  - Day of Sun  \nMonday  - Day of Moon  \nTuesday - Day of planet Mars  \nWednesday - Day of planet Mercury  \nThursday - Day of planet Jupiter  \nFriday   - Day of planet Venus  \nSaturday - Day of planet Saturn  \n\nRemnants of the Anglo-Saxon gods remain in the English language names for days of the week:\n\nTiw, the Anglo-Saxon equivalent of Tyr, the god of war: Tuesday \nWoden, the Anglo-Saxon equivalent of Odin, the one-eyed wise god of storms and the dead: Wednesday \nÞunor, the Anglo-Saxon equivalent of Thor, the thunder god: Thursday \nFrige, the Anglo-Saxon equivalent of Freya, the love-goddess: Friday
897781
GMT 0:00 is the first second of the day.\nAll countries times are eith + or - so many hours GMT.
458004
hi,\n\nUnder the new metric time (EEC directive 019473 - 2006) due to come in to place in all European countries by 2009 at the latest, a day will consist of two equal periods; a metday and a metnight.\n\nEach metday will be equal to 12 hours or 10 new methours and each methour will consist of 100 metmins.\n\nNow since 12 hours = 10 methours = 720 mins\nThen one methour = 72 minutes = 100 metmins\nThus one metmin = 72/100 mins\nSo one min = 100/72 metmins\nTherefore 15 mins = 1500/72 metmins\n\nIn decimal time 15 mins = 20.83333 metmins or 0.02083 of a metday.\n\nhope this helps PP
217739
I dont know.  How did the english get the world to go along with it?  Also why not have 12 hours of light and 12 hours of dark.  Instead they do 6am is sunrise.  Why not 1am sunrise and 1pm sunset.
1140073
The earth rotates 1 on its axis every 24 hours.  Hipparchus proposed dividing the day equally into 24 hours which came to be known as equinoctial hours (because they are based on 12 hours of daylight and 12 hours of darkness on the days of the Equinoxes). Ordinary people continued to use seasonally varying hours for a long time. Only with the advent of mechanical clocks in Europe in the 14th Century, did the system we use today become common place
736980
In English military parlance, D-Day is a term often used to denote the day on which a combat attack or operation is to be initiated. While the initial D in D-day does not stand for anything, it often represents a variable, designating the day upon which some significant event will or has occurred; see Military designation of days and hours for similar terms.\n\nDuring WW2, D day referred to Dieppe day