Why doesn't this year have a leap year?
http://www.timeanddate.com/calendar/index.html?year=2100&country=1
I thought every year divisible by 4 had a 02/29.
2007-11-28 17:55:30 · 6 answers · asked by nemahknatut88 2 in Science & Mathematics ➔ Astronomy & Space
The Gregorian calendar, the current standard calendar in most of the world, adds a 29th day to February in all years evenly divisible by 4, except for centennial years (those ending in -00) which are not evenly divisible by 400. Thus 1600, 2000 and 2400 are leap years but 1700, 1800, 1900, 2100, 2200 and 2300 are not.
The reasoning behind this rule is as follows:
* The Gregorian calendar is designed to keep the vernal equinox on or close to March 21, so that the date of Easter (celebrated on the Sunday after the 14th day of the Moon that falls on or after 21 March) remains correct with respect to the vernal equinox.[1]
* The vernal equinox year is currently about 365.242375 days long.
* The Gregorian leap year rule gives an average year length of 365.2425 days.
2007-11-28 18:05:28 · answer #1 · answered by Lexs.august 2 · 0⤊ 0⤋
The rules for the Gregorian calendar (which most people use) are as follows:
1) If the year is divisible by 4, it is a leap year.
2) However, if the year is divisible by 100, it is not a leap year.
3) However, if it is divisible by 400, it is a leap year.
Rule 3 has priority over rule 2, and rule 2 has priority over rule 1.
2007-11-28 18:07:04 · answer #2 · answered by lithiumdeuteride 7 · 0⤊ 0⤋
2007 isn't divisible by 4 ... 2008 is and will have a 2/29.
Rule is a bit more complicated:
Has 2/29 if year divisible by 4, except:
Doesn't have 2/29 if year divisible by 100, unless it's divisible by 400.
So 2000 was a leap year, but 1700, 1800, 1900, 2100, etc are not.
2007-11-28 18:03:25 · answer #3 · answered by halac 4 · 0⤊ 0⤋
A year is a leapyear if it's divisible by 4, unless it's also divisible by 100 in which case it's not, unless it's also divisible by 400 in which case it is. Therefore 2000 is a leapyear while 2100 is not, for example.
2007-11-28 18:19:56 · answer #4 · answered by Anonymous · 0⤊ 0⤋
I can't believe you're checking out the year 2100, you're not even gonna be living by that time... I hope not anyway lol JK JK
2007-11-28 18:12:30 · answer #5 · answered by The Beast from the Middle East 5 · 0⤊ 0⤋
What we need is a new calendar...
A METRIC calendar!
Every year has 100 days. (anything left over is vacation)
Every day has 10 hours.
Every hour has 100 min.
(anything left over is... you guessed it... naptime!)
2007-11-28 19:29:32 · answer #6 · answered by Faesson 7 · 0⤊ 0⤋