Why are there 365 days in the year? Why not 364 or 366?
458339
It takes the earth 365.25 days to complete one revolution of the sun.
480279
because it relies to the events which can't be measured metrically anyway. Weeks follow the approximate lunar circle, there's 365 days in a year etc.\n\nalso, imagine we would divide a day into 100 hours. 1 hour would last only 14 minutes, which would be way too few and confusing. \nIf we divided a day into 10 hours, an hour would last 2 hours and 64 minutes. this would probably be too long, and we wouldn't have enough hours to properly determine a time of day...\n\nAn hour was determined as 1/4 of the time when the shadow of a pole travels a 60 degree angle or something... i THINK. I might be wrong on this, high school phisics is a LONG time ago. \nAnyway, it was old Sumerians or Babilonians who determined it like that and ever since it wasn't changed. We're too used to these units now, we can't just change them without causing a massive MESS :D
771065
Yes there is a better way than counting.\nBecause you have a leap year every four years, you can say that there are 365.25 days per year, as long as you deal in years that are multiples of four (which I will be doing). \n\nSo,  that means there are 52 + (1.25/7) weeks per year. \nThis is the same as 52 + (5/28) weeks per year. \nAs a top heavy fraction, this is 1461/28 weeks per year, and therefore there are 1461 weeks in 28 years. This is relevant because it is an exact number of weeks, the actual number 1461 doesn’t matter. This means that exactly 28 years ago, on 6 November, it was a Monday like it is today.\nSo, 6 November 1978 was a Monday.\n6 November 1950 was a Monday.\n6 November 1922 was a Monday.\n6 November 1894 was a Monday.\n\nWe have slightly overshot now, so we need to add on years. (I did this because it is easier to add than subtract, plus 1894 is closer to 1907 than 1922.)\nIn 4 years there are 208 weeks and 5 days (I found this by multiplying 52 + (1.25/7) by 4 to get 208 + (5/7) which is equivalent to 208 weeks and 5 days.)\n\nSo, 208 weeks after 6 November 1894, the date is 1 November 1898, also a Monday (because it’s an exact number of weeks later). 5 days later, it is a Saturday, on 6 November 1898.\nYou use the same process to find that it is a Thursday on 6 November 1902, and that it was a Tuesday on 6 November 1906.\n\nSince neither 1907 nor 1907 was a leap year (1904 and 1908 were), 365 days later it will be 6 November 1907.\n365 days is 52 weeks and 1 day. So, 52 weeks later, it is a Tuesday and the date is 5 November 1907, and the next day is 6 November 1907, and it’s a Wednesday.\n\nSo on 6 November 1907, it was a Wednesday.\n\nActually there is a slight problem with this method, because 1900 was not actually a leap year, but in this case it did not matter because the date is after 1900. You would have to adjust it very slightly for dates before 1900.
62449
Why 12 Months?\n\n\nThe ancient man found that in a complete cycle of seasons there are twelve cycles of the moon, thus the cycle of seasons, now refered as YERA was mad of 12 months.\n\n365 Days Of A Year?\n\n\nAfter getting men more knowledgeable it was found that one complete cycle of seasons OR the year takes 365 days.\n\n\nAdvancement in observations and clculations suggested that one complete cycle is of 365.242 days, thus in order to kepp the seasons fall the same way on the fixed times it was deviced that one day may be add after four years in February.\n\n\nINTERESTIN\n\n\nThe exact measure of 365.242 days in a year with adjustment of one day every four year required another adjustment of one day at every hundred years. For that Feburary in the year 2000 was to be made of 30 days (one day of leap year and one day of leap century). Unfortunately computerisation in the 20th century could not get information of adding two days and thus we had to accept a clander for 2000 with loss of one day. It means now we have a disadvantage of one day in a complete cycle. This is go on increasing in future if not checked earlier. With this milliniums later June will fall in severe cold in the northen hamesphire.\n\n\nEquaual Days in a Month?\n\n\nThere had been different efforts on international level to depict a system in which every month starts the same day and every month has the same number of days but so far nothing could have been developed.
647693
lots :-)  Let me figure it out...\n\nFirst the number is spelled 'googol' and is equal to 10^100 (1 followed by 100 zeroes).\n\nA year nominally has 31,556,926 seconds (365.242199 days x 24 hours x 60 minutes x 60 seconds).  I used the number 365.242199 because that is how long it takes for the earth to go once around the sun... we round this to 365 and add an additional day every 4 years (with some exceptions 3 out of every 4 centuries, blah, blah, blah)...\n\nAnyway, I digress.  Back to the problem at hand.\n\n10 x 10^99 / 3.1556926 x 10^7 = (10/3.1556926) x 10^92\n\n3.16887646 × 10^92 years.  There is no English name for this word but it is *lots* like I said at the beginning.  :-)\n\nThe closest I can get to a name would be to use vigintillion (10^63) as a base and go from there...\n\n3.16887646 x 10^29 x 10^63 or\n\n316 x 10^27 x 10^63 +\n887 x 10^24 x 10^63 +\n646 x 10^21 x 10^63\n\nSo that would be:\n316 octillion-vigintillion, 887 septillion-vigintillion, 646 sextillion-vigintillion years\n\nOkay, a little more research and I found that my names were close but not exactly correct.  This number should be called:\n  \n316 octovigintillion 887 septenvigintillion 646 sexvigintillion years!
225407
TWO WAYS TO REMEMBER HOW MANY DAYS IN A MONTH\n\nA RHYME:\n30 days has September, APRIL, June and November.\nAll the rest have 31 except February alone which has 28 or 29 on a leap year.\n\nA STRANGE COINCIDENCE\nClench your fists and put your knuckles together side my side. The first knuckle on the left of your left hand is January, then moving to the right there is a dip, this is February, then there is the next knuckle, March, etc. until you get to December on the middle of your right hand. All the knuckles are 31 days and all the dips are 30 (except February, which is an exception, as above)
77427
365 and a quarter (hence the leap year every four years)
950609
The ancients – I don’t know how far back – noticed that life and the seasons repeated itself on a 365 day cycle.  The stars came back to the same position, the rivers would flood on this schedule.  This is why a year was set at 365 days.
563138
31,557,600\n\nThe only recognized "year" unit in scientific practice is a year of exactly 365.25 days, based on a day of exactly 86400 seconds (these are standard SI seconds, formerly known as "atomic seconds"). Therefore:\nThe number of seconds in a year is exactly 31557600.
931692
1000*365.25 = 365250 days\n\nbecause in i year it is 365 days and 6 hrs.\n\nso in 4 yrs we usually add one day and write 366 days \nit is known as leap yr.\n\nso practically in 1 yr  it is 365.25 days\n\nso in 1000 years it is 365250 days
432119
It takes about 365.2422 days to orbit the sun (i.e. a solar year). If we have a year be 366 days every four years, that averages out to 365.25 daysper year. This is still a bit large, so we declare 3 of the four century marks to *not* be leap years. That then gives an average of 365.2425, which is close enough for most purposes.\n\nSpecifics: Every year that is divisible by 4 is a leap year *except* those ending in 00. These are leap years only if divisible by 400.
725034
An interesting question, which requires thinking carefully about how our common measure of time is related to certain astronomical (solar) positional recurrences.  A lot of people (though not all) have answered you as though the year were exactly 365.25 days long on average, but it's more subtle than that.  \n\nThere are in fact two particular "years" of interest:\n\n1. The sidereal year (period of the Earth's revolution about the Sun with respect to the stars, i.e. operationally, the time for the Sun to apparently "return" to the same position against the stars, after a "year" [crudely 365+ days], as viewed from Earth):\n\n365.256366... days.\n\n2. The tropical year (time for the Sun to cross the celestial equator [the projection of the earth's equator in space] again [e.g. from south to north] after a "year" [crudely 365+ days]).  Alternatively, "the period of revolution of the Earth about the Sun with respect to the Vernal Equinox":\n\n365.242199... days.\n\n(Both figures are quoted to an accuracy sufficient for our present purposes.)\n\nThese two different "years" differ by just ~20.4 minutes, owing to the precession of the Earth.  (One full precession of the Earth's spin axis in space takes ~25781 years.  This long, latter number of years is in fact equal to 365.25 or so days divided by the (essentially observed) "motion of the Vernal Equinox along the celestial equator," at the rate of ~20.4 minutes per year as just mentioned --- check it out.  [Sorry about the technical language, but this is technical stuff.]) \n\nIt's actually the tropical year that determines the rate at which the observed seasons recur, and since we want them to be "at the same time of the year," our long-term timekeeping is geared to the tropical, not the sidereal year.\n\nNotice that at 365.242199 days, this "tropical year" is just a tad short of 365.25 days.  That's why, instead of the simplistic idea of a leap year occurring every 4 years (and having an extra day that accounts "exactly" for 4 x the extra 0.25 days), there will come a time when we've overcounted a bit.  \n\nFor example, after 100 years, we should have had 100 x 0.242199 "extra days," or 24.2199 days.  The "one more day every 4th year" rule would give us 25 extra days per century, ~ 0.78 days more than needed.  If we could drop just 1 day then, that would be better --- but then we'd be under by ~ 0.22 days --- aha! --- close to a quarter of a day!  That's why the revised rule comes in that complete century years are NOT leap years --- UNLESS they're divisible by 400!  (Figure out for yourself from the 365.242199 figure how well this works in the long run.  I think you'll find that the calendar, on average, doesn't get a full day out of step with these revised rules until something like 3,300 years have gone by!) \n\nO.K., so maybe this is much more than you wanted to know.  However, with the right understanding of what the length of the year we usually measure is, 365.242199... days, then 1 million days is 10^6 divided by this, or 2737.90926... years, or 2737 years and 332.10... days.***\n\n*** Remember, this is a mathematically average result, for essentially perfect intervening TROPICAL years (to the accuracy given).  If you want to know it in CALENDAR years and a specific whole number of days, the answer will vary slightly about the preceding result, according to when you start counting. This variability is not just because of the usual "every fourth year is a leap year"  pattern, but also because of the way that century years aren't all treated in the same manner.  It's awkward to give a general rule!  \n\nLive long and prosper.
1147390
In England, 1752 (a leap year) only had 355 days in it, As September 2nd was followed by September 14th so as to change from the  Julian to the Gregorian calendar,
355992
I can't think of a single culture that had a calendar and did not have an approximately 365 day year. It's just something you notice, and it's not really avoidable.
522488
Possibly because 28 x 13 = 364.\n\nTo keep the years on an even keel, you need to have approximately 365 and 1/4 days in each year, which is why we have 365 days for 3 years running, and then the fourth year is 366 days. \n\nIn other words, there are 13 lunar cycles, plus 1 or 2 extra DAYS in a whole year - with a year being 4 seasons - so how would you deal with that if you were creating a 13 month calendar? Everything would end up out of sync! You would end up with a year that had 14 lunar cycles in it...!
959916
I have no idea what this 360 day year you refer to is about.\n\nHere is a Microsoft article that may help you understand year calculations in Excel.\nhttp://support.microsoft.com/kb/214019\n\n///
378736
Keep in mind, things like seasons, months, minutes, etc, are human contructs- we can define them anyway we like.  Earth doesnt really neatly divide the year into 4 parts, humans do-