February of a leap year has 29 days. Why?

[Sinyalan]

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Your answers?

[rambutan]

Leap year
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For the 1921 film starring Fatty Arbuckle, see Leap Year (film).

A leap year (or intercalary year) is a year containing one or more extra days (or, in case of lunisolar calendars, an extra month) in order to keep the calendar year synchronised with the astronomical or seasonal year. For example, February would have 29 days in a leap year instead of the usual 28. Seasons and astronomical events do not repeat at an exact number of full days, so a calendar which had the same number of days in each year would over time drift with respect to the event it was supposed to track. By occasionally inserting (or intercalating) an additional day or month into the year, the drift can be corrected. A year which is not a leap year is called a common year.

[tripwire]

For a period of 4 years... each year has an extra 6 hours because of earth's rotation. So, that makes another day within 4 years time. Since February is only 28 short days, a legitimate solution to put in.

[rcruman]

2005 = 365 1/4 days
2006 = 365 1/4 days
2007 = 365 1/4 days
2008 = 365 1/4 days

so on the 4th year the extra 1/4 days will added that/s why it has 29 days.
and Gregorian Calendar (commonly used today was not the first calendar being used).
Early calendar has February as the last month.

February is the second month of the year in the Julian and Gregorian calendars. It is the shortest month and the only month with fewer than 30 days. The month has 29 days in leap years, when the year number is divisible by four (except for years that are divisible by 100 and not by 400 in the Gregorian calendar). In common years the month has 28 days. Leap year birthdays are usually celebrated on the 28th in a non-leap year. Some believe that February originally had 29 days (30 in a leap year), but that idea was invented by Sacrobosco during the Middle Ages. See Month lengths.

http://en.wikipedia.org/wiki/February

The early Roman calendar had only ten months, with Decembris (Latin decem=10) the last month of the year and March the first. The month of July, the fifth month, was number-named Quintilis (Latin quin-=5) until it was renamed for Julius Caesar. February was not part of the original calendar, but was added (with a variable number of days), as the month preceding the beginning of the year. Sometimes there was an additional intercalary month.
February was a month for purification, as the Lupercalia festival suggests. Originally, February may have had 23 days. In time the calendar was standardized so that all 12 months had 29 or 31 days in each month, except for February which had 28. Later Julius Caessar re-standardized the calendar to line up with the seasons.

http://ancienthistory.about.com/od/r...anFebruary.htm

Peace!