Why can't there be 25 hours in a day?
78850
the 24 hours in a day represent the time needed by the earth to make a turn around the sun\nfor that we can not make the day 25 hours because it will not have any meaning
510141
The answer is "daily."  Yahoo! may not want to try to explain it, because if you don't live in the U.S.'s Pacific Time Zone, the "day" can begin at a pretty strange time (like 2 p.m., 9 a.m., etc.).
993242
there have been studies preformed with humans living under ground with NO external environment . this allowed the human body to run on a true biological clock. every time a subject was tested it was prov en that a human body clock is actually 25 hrs not 24hrs. Our bodies adapt to a 24 hr cycle b/c of the earths rotation.
287692
There is only 24 hours in a day, add a women and whats left?
769751
It does not have to be an hour long. It could be 10 hours long.
278323
because there is only 24 hours in a day\n12am = 0000 hrs or 2400 hrs  /////         12pm = 1200 hrs\n1am = 0100 hrs               /////    1pm = 1300 hrs    \n2am = 0200 hrs               /////         2pm = 1400 hrs\n3am = 0300 hrs               /////         3pm = 1500 hrs\n4am = 0400 hrs               /////         4pm = 1600 hrs\n5am = 0500 hrs               /////         5pm = 1700 hrs\n6am = 0600 hrs               /////         6pm = 1800 hrs\n7am = 0700 hrs               /////         7pm = 1900 hrs\n8am = 0800 hrs               /////         8pm = 2000 hrs\n9am = 0900 hrs               /////         9pm = 2100 hrs\n10am = 1000 hrs              /////         10pm = 2200 hrs\n11am = 1100 hrs              /////         11pm = 2300 hrs
672574
In 1878, Canadian Sir Sanford Fleming proposed the system of worldwide time zones that we use today. He recommended that the world be divided into twenty-four time zones, each spaced 15 degrees of longitude apart. Since the earth rotates once every 24 hours and there are 360 degrees of longitude, each hour the earth rotates one-twenty-fourth of a circle or 15 degrees of longitude. Sir Fleming's time zones were heralded as a brilliant solution to a chaotic problem worldwide.\n\nUnited States railroad companies began utilizing Fleming's standard time zones on November 18, 1883. In 1884 an International Prime Meridian Conference was held in Washington D.C. to standardize time and select the Prime Meridian. The conference selected the longitude of Greenwich, England as zero degrees longitude and established the 24 time zones based on the Prime Meridian. Although the time zones had been established, not all countries switched immediately. Though most U.S. states began to adhere to the Pacific, Mountain, Central, and Eastern time zones by 1895, Congress didn't make the use of these time zones mandatory until the Standard Time Act of 1918.\n\nToday, many countries operate on variations of the time zones proposed by Sir Fleming. All of China (which should span five time zones) uses a single time zone - eight hours ahead of Coordinated Universal Time (known by the abbreviation UTC - based on the time zone running through Greenwich at 0 degrees longitude). Australia uses three time zones - its central time zone is a half-hour ahead of its designated time zone. Several countries in the Middle East and South Asia also utilize half-hour time zones.\n\nSince time zones are based on segments of longitude and lines of longitude narrow at the poles, scientists working at the North and South Poles simply use UTC time. Otherwise, Antarctica would be divided into 24 very thin time zones!\n\nThe time zones of the United States are standardized by Congress and although the lines were drawn to avoid populated areas, sometimes they've been moved to avoid complication. There are nine time zones in the U.S. and its territories, they include Eastern, Central, Mountain, Pacific, Alaska, Hawaii-Aleutian, Samoa, Wake Island, and Guam.\n\nWith the growth of the Internet and global communication and commerce, some have advocated a new worldwide time system.
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.
668819
It doesn't.  It actually takes 365.2422 days, which is why every 100 years the leap year doesn't have an extra day.  Except for years than are evenly divisible by 400, they do.  (To make up for the 0.0022 extra.)  This most recently happened in 2000 and won't happen again until 2400.
92160
Because they had to balance a year in a year. If February would have more days, then there'd be more days than a year can hold! I mean, yeah, they could take days out of other months for February, but what would that solve? Nothing. Months are grouped occurding to their season.
395749
"The change to Daylight Saving Time (not Savings!) allows us to use less energy in lighting our homes by taking advantage of the longer and later daylight hours."\n\nAs an aside, my birthday is on one of the last days in October, meaning that sometimes I have a 25-hour birthday... at least until 2007, when the time change back from DST will be pushed to the end of November.
434259
The length of a day has nothing to do with the amount of pollution in the air.  It is dependent only upon the rate of rotation of the earth on its axis, and remains at just under 24 hours like it's always been.
1163799
There aren't 24 hours in a day. In fact, no day is 24 hours long. The average length of a day is just short of 24 hours, so we use 24 hours as the average.\nIn fact, there are many factors that contribute to how long a day is. Large earthquakes and tsunamis can literally extend or shorten a day by slightly altering the earth's rotation (this happened a few years back). While this could conceivably cause major problems, the suns gravity helps to put the earth back into its place.\n\nThere were 24 hours in a day. An hour is defined as 60 minutes, and a minute is defined as 60 seconds. 1 second was originally defined as 1/86,400 of a day. A day is well known to be the time taken for a celestial body to complete a rotation on its axis, and it was known that days are of varying length. So the "day" used for the definition of the second was the mean average length of days from 1750 to 1892.\n\nToday, a second is much more precise, as are the minute and hour. Clocks are nowhere near as accurate as the definition of a second, so that fraction of a day doesn't make much of a difference to them. Basically, how it works is that seconds, minutes, and hours are precise measurements of time. Even though they were initially based on the time in a day, that is no longer the case because a day is not precise.
24749
Probably because the server is located on the West coast...this is normally why there is a difference. The service itself doesn't really have anything that would be time specific enough to call for them to allow users to set their own time zone...
476278
I've never found that, but I have found that at Daylight Savings Time, it will change.  It doesn't even sound plausible, but it always works like that. I'm really not sure why, but my mom and best friend have the same problem.  Who knows.
517973
I think you meant the time cube, not the quantum cube. 4 Earth Quadrants simultaneously rotate inside 4 Time Cube Quarters to create 4 - 24 hour days within one Earth rotation. \n\n"Why not the Time Cube?"\nThe only reason is educated stupidity.
913486
Actually a good many countries around the world use the 24 hour clock system. Then there isn't a need to say AM or PM, you know whether its day or night. Also the military begins attacks, movements and such on Greenwich mean time, its a town in Britain. And its used so everyone that aware of an operation knows what time it begins regardless of what part of the world they are in.