HOW PARASARA DIFFERS FROM OTHERS - Saptarishis Astrology

The sages state that Chandram, Nakshatram, Sauram, Brahaspatya and Savana are the five
systems of calculating time.
दळाालशधं भावभ ळशन्त चान्द्रभ ्
नषिशभन्दौ बागिाश्रामाश्च
वौयं बास्कय याशळबोगास्तका
वंसाभामाा् शिंळशिनं वालनभ ्
As the name implies, the measurement of time calculated on the basis of moon is known
as Chandramanam, which lasts till the end of Amavasya (New moon). The Moon‟s
transit in the Nakshatras (all the 27) is called Nakshatra manam; Sauramanam is known
as Surya‟s transit in a sign; from Guru‟s transit in a sign, Barhaspatyamanam is known;
and Savanamanam comprises of thirty days per month.
From the end of one new moon to the end of another new moon is one month. Such
twelve months make one year. This system is known as Chandramanam. In this, the number
of days in one year will vary from 354 to 384.
The Nakshatramanam is based on the Moon‟s transit through all the twenty seven
Nakshatras in a month. Such twelve months make a year. In this system, a year will
have 328 days approximately. A month has 27.321 days (27 days 7 hours 29 minutes 11.5
seconds).
Sun‟s transit through the twelve rasis is one year. In this system the number of days in a
year are 365 or 366 (once in 4 years) which is equal to the calendar followed by the whole
world. This is called Sauramanam.
Just as the Sun‟s stay in a rasi is a month, Guru‟s stay in a rasi is one year. In this system,
the number of days in a year vary from 354 to 380 days, as in Chandramanam. Both in the
Chandramanam and the Sauramanam, the names of the year are the same and sixty in
number.
The fifth and the last is called Savanamanam in which the day is from sun rise to the
next sun rise. Such thirty days make one month and such twelve months make a year.
Thus the year will have 360 days.
A casual glance at the above five methods indicate that all of them agree to disagree with
each other. Then why were they evolved There must be some reason: What it might be
Let us study the following sloka:
वले वलािोत्पातौ फाशास्पत्यते