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1st answer: Because Earth actually takes 365 days and 6 hours to complete its one revolution. So after four years 6 hours change into 24 hours [6*4], meaning 1 day which is added in February as 29th February.
2nd answer: February has 29 days in a leap year for the following reason: A normal year is actually 365 days around 6 hours to be exact 5 hours, 48 minutes and 47 seconds.
To make our calendar system work, we just lump the 6 hours together every 4 years to create the extra day in February, this just happens to be February 29th.
To mange the fact it's not exactly 6 hours for the extra, we adjust for that on the century.
You can use the following algorithm to work out if a year is a leap year or not:
if year is divisible by 400 thenis_leap_year else if year is divisible by 100 then not_leap_year else if year is divisible by 4 then is_leap_year else not_leap_yearThe Earth's yearly voyage around the Sun is not an exact number of days - it is 365.2422 days, or about 365 1/4 days. Therefore, to adapt the calendar to the astronomical reality, every 4 years an extra day is added to the year.
FEBRUARY HAS 29 DAYS IN A LEAP YEAR,i.e., AFTER EVERY FOUR YEARS FEBRUARY HAS 29 DAYS. THIS IS TO ADJUST THE 1/4TH DAY WHICH OCCURS AT THE END OF EVERY YEAR AS AN YEAR HAS 365 AND A 1/4TH DAY IN IT.
During a leap year, ALL of the months have 29 days. February is the only month that has exactly 29 days; all of the other months have more days than 29.
all 12 months have 28 days wheather a leap year or no leap year.
hope this helps,
Elliexx
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How many days does February have?
In a non-leap year February has 28 and in a leap year it has 29 days A non-leap year is like 2009,2010,2011,2013,2014,2015 A leap year is 2008, 2012, 2016 (every 4 years)
29d in f in a l y?
29=Days in February in a Leap Year 29=Days in February in a Leap Year
How many days were in February 1944?
29 days are in February 1944 because it was a leap year
How many days does March have in a leap year?
March has 31 days every year, and does not change in a leap year. February is the only month that changes, adding the 366th leap day as February 29.
How many days are there in the shortest month in a leap year?
29 days, as there are 29 days in February in a leap year.
If it is a leap year how many days will be in February?
On leap years February has 29 days.
How many days were in february 2012?
There were 29 days in February 2012, as 2012 was a leap year.
Which is the shortest month?
February is the shortest month of the year with 28 days, and 29 days during a leap year.
How many days were in February in 2004?
2004 was a leap year, so there were 29 days.
How many days does February have in a leap year?
February has 29 days in a leap year == February has 29 days during a leap year for the Gregorian calender instead of the regular 28. Every year that is divisible by four is a leap year. 2008/4 502 Leap year 2009/4 502.25 No leap year. http://www.timeanddate.com/date/leapyear.html
Does February have 30 days?
No, February has 28 days, 29 if it is a leap year.
How many days are there in February and in a year?
There are 28 days in February in a normal year and 29 in a leap year. There are 365 days in a normal year and 366 in a leap year.
