THE INDIAN NATIONAL CALENDAR
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(1) Used in ancient indian astronomy: The 27-fold and 12-fold division of the ecliptic. The first rasi is Vrsa, with the corresponding month of Vaisakha. |
From Wikipedia, the free encyclopedia
The Indian national calendar (sometimes called Saka calendar) is the official civil calendar in use in India. It is used, alongside the Gregorian calendar, by the Gazette of India, news broadcasts by All India Radio, and calendars and communications issued by the Government of India. Beside such formal purposes, the calendar is not very widely used.
In leap years, Chaitra has 31 days and starts on March 21 instead. The months in the first half of the year all have 31 days, to take into account the slower movement of the sun across the ecliptic at this time.
The names of the months are derived from older, Hindu lunisolar calendars, so variations in spelling exist, and there is a possible source of confusion as to what calendar a date belongs to.
Years are counted in the Saka Era, which starts its year 0 in 78. To determine leap years, add 78 to the Saka year - if the result is a leap year in the Gregorian calendar, then the Saka year is a leap year as well.
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MORE DETAILS AT
http://en.wikipedia.org/wiki/Indian_national_calendar
Images:
(1) http://subhashkak.voiceofdharma.com/articles/0301078.htm
(2) http://emr.cs.iit.edu/home/reingold/calendar-book/images/