Q.

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1.

Duration of a solar year is slightly less than 365.25 days.There are 365 days in a common year. In each leap year, the month of February has 29 days instead of 28. Adding an extra day to the calendar every four years compensates for the fact that a period of 365 days is shorter than a solar year by almost 6 hours

Answered by LIPSIKA, 31 Oct '12 11:54 am
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2.

A leap year (or intercalary or bissextile year) is a year containing one additional day (or, in the case of lunisolar calendars, a month) in order to keep the calendar year synchronized with the astronomical or seasonal year. Because seasons and astronomical events do not repeat in a whole number of days, a calendar that 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 that is not a leap year is called a common year.

For example, in the Gregorian calendar (a common solar calendar), February in a leap year has 29 days instead of the usual 28, so the year lasts 366 days instead of the usual 365. Similarly, in the Hebrew calendar (a lunisolar calendar), Adar Aleph, a 13th lunar month is added seven times every 19 years to the twelve lunar months in its common years to keep its calendar year from drift ...more

Answered by Ataur Rahman, 31 Oct '12 11:13 am
For example, in the Gregorian calendar (a common solar calendar), February in a leap year has 29 days instead of the usual 28, so the year lasts 366 days instead of the usual 365. Similarly, in the Hebrew calendar (a lunisolar calendar), Adar Aleph, a 13th lunar month is added seven times every 19 years to the twelve lunar months in its common years to keep its calendar year from drift ...more

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3.

The term leap year gets its name from the fact that while a fixed date in the Gregorian calendar normally advances one day of the week from one year to the next, in a leap year it will advance two days due to the year's extra day thus "leaping over" one of the days in the week. For example, Christmas Day fell on Saturday in 2004, Sunday in 2005, Monday in 2006 and Tuesday in 2007 but then "leapt" over Wednesday to fall on a Thursday in 2008.

Answered by iqbal seth, 31 Oct '12 11:11 am
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4.

Leap years are needed to keep our calendar in alignment with the earth's revolutions around the sun because a year is not exactly 365 days to the second but 365.2422 days long so every 4 years one day is added to the year to make up for the time lost.

Answered by aflatoon, 31 Oct '12 11:06 am
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5.

Leap day (February 29) only occurs during a Leap Year.

Leap Year occurs every four years, except for years ending in 00, in which case only if the year is divisible by 400.

Answered by ajay, 31 Oct '12 11:05 am
Leap Year occurs every four years, except for years ending in 00, in which case only if the year is divisible by 400.

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