On 29 April 2010 10:01:00 PM MOHAN ROY answered :

As a wise guy might respond, the number of days in a month is not equal because they are different!? With that bad joke aside, we can uncover the true reason why the months on our common calendar have different numbers of days. We might also want to find out why the days are distributed among the 12 months the way they are.

The days of the month were not equal even during the period of the Roman Empire. In fact, the Roman calendar changed at least once, though it was based more directly on the changes of the moon. There are 29.5 days between new moons. This is the basis for the general length of months. One of the original Roman calendars had only 10 months and the months contained either 30 or 31 days. Curiously, there were more than 60 days of winter that didn’t seem to be included in a specific month.

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On 30 April 2010 10:27:22 PM Aniketh B.A answered :

I think you have not studied correctly in primary

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On 9 September 2010 3:55:27 AM priyanka chaudhary answered :

it is a systematic and predefined method to know about days, months and years.bt there is no scientific fact behind dis

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On 31 January 2011 11:47:23 PM CHATURBHUJ PODDAR answered :

One of the traditional Kings of Rome, Numa Pompilius, decided to reform the calendar to make as few months as possible have even numbers of days. His first reform added two months, January and February, to the end of the calendar, and made all the months, save February, have odd numbers of days. This made the calendar roughly alternate in the number of days in a month: 31, 29, 31, 29, 31, 29, 29, 31, 29, 29, 29, 28.

A popular apocryphal legend dating from the 13th century tries to simplify the reasons behind the number of days in a month drastically. It holds that originally the Julian Calendar was regular, with month lengths alternating: 30, 29, 30, 29, 30, 29, 30, 29, 30, 29, 30, 29. The theory holds that Caesar then added one day to every month except February, to fill out the calendar. The theory further stipulates that during the reign of Augustus Caesar, August was changed to have 31 days, in order to match the length of July. This theory has ample evidence disproving it, including older irregular Roman calendars. Whatever the motivations of the ancient Romans to make their calendar irregular, it was probably not connected to the hubris of Augustus Caesar.

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