wich month has 28 days in a year?
461101
all month has 28 days in a year
79668
It's not true that it's exactly 1 in 4. If you look at it on a daily basis, there are 366 days in a leap year, so in a 4 year period, the probability that any given day is within a leap year is 366/1461.
40920
60 seconds in a minute, 60 minutes in an hour, 24 hours in a day, 365 days in a year. Multiple 60, 60, 24, and 365 and you get 31,536,000 \n(unless it is a leap year or there is a leap second)
1028919
B.\n\nBut it is not actually correct.  %'s are generally figured on a standard 360 day calendar year, this problem uses 365
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,
498462
570AD\n\nHowever, the years don't line up to present since the Islamic Calender only has 354 days (it's lunar, not solar)
213206
A leap year is a year with one extra day inserted into February, the leap year is 366 days with 29 days in February as opposed to the normal 28 days. (There are a few past exceptions to this) \n\nLeap years are needed so that the calendar is in alignment with the earth's motion around the sun. \n\nIt takes 365.2422 days for the earth to make one revolution around the sun (the time is takes to orbit the sun).\n\nUsing a calendar with 365 days would result in an error of 0.2422 days or almost 6 hours per year. After 100 years, this calendar would be more than 24 days ahead of the seasons (tropical year), which is not a desirable situation. It is desirable to align the calendar with the seasons, and make the difference as small as possible.\n\nBy adding leap years approximately every 4th year, this difference between the calendar and the seasons can be reduced significantly, and the calendar will follow the seasons much more closely than without leap years.
156427
28 days\nActually.... on the 28th day.
844854
I know how to do the number of days if that helps.\n\n=DAYS360(B2,C2,FALSE)\n\nCell B2 has the start date and Cell C2 has the end date with the formula in Cell D2.\n\nOK the month is =MONTH(C2-B2) but it will give you a result of 11 as it rounds to the nearest number.
899482
You do 365 days times 24 hours, times 60 minutes, times 60 seconds.  So:\n\n1 year = 365 days\n1 day = 24 hours\n365 days = 8760 hours\n1 hour = 60 minutes\n8760 hours = 525600 minutes\n1 minute = 60 seconds\n525600 minutes = 31536000 seconds\n\n365 x 24 x 60 x 60 = 31536000
563958
365, one for each day
1102057
Thirty days has September, April, June and November all  the rest has thirty one except February which has twenty eight or twenty nine in a leap year. So that means...... there is no February the 30th. srry dude you don't have a birthday.
883836
i couldn't tell you about years having the same dates onthe same day, but if you look at february and march, they have the same 28 dates/days for the first 28 days, except on leap years...how do i know.....a leap year mean having to wait an extra day for my birthday... :(  so you usually don't even have to change your claendar to march! spiffy huh?
143847
365 days w/o leap year\n366 days with leap year\n\nYou should know this since elementary.
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...!
143192
Here's one way... there may be others....\n\nMake column A the "input" column (where you type in the # of days).  Make column B, C, and D "output" columns which displays the # of years, months, and days respectively.  Input the following formulas:\n\nCell B2:  =TRUNC(A2/365)\nCell C2:  =TRUNC((A2-(B2*365))/30)\nCell D2:  =MOD((A2-(B2*365)),30)\n\nHope this is what you are looking for...
375934
21, 29 days in february in a leap year\n22, 10 years in a decade\n23, 40 Days and Nights of the Great Flood\n25, 64 Squarers on a checkerboard\n27, 200 Dollars for Passing Go in Monopoly\n28, 16 ounces in a pound\n30, Weeks on a ballon