Ayan Chalan Siddhant: Precession of the Equinoxes (Ayanamsha and seasonal change research confirmed by other research) (Paperback) (ISBN-13: 9798894468426)

How to calculate 25771 years of cycle, 71.59 years of one degree Ayanamsha, 70.56 years of one day of seasonal change, 50.29" Ayanamsha of one year, etc. have been explained in detail. Apart from this, it has also been explained in the same chapter that occurs in 'Ishtavarsha' and 'Ganavarsha' what difference.

In the third chapter, how many cycles passed from Satyayuga to the end of Dwaparayuga has been given in detail. The calculation of how many days of seasonal change or how much Ayanamsha had passed at the end of Dwapara Yuga has also been given in detail.

Vikrami Samvat, Shaka Samvat and AD started after how many years of Kaliyuga. On the day when Ayanamsha was again at the zero point, how many years of Vikrami Samvat, Shaka Samvat and AD had passed. The method of manufacturing Ayan Gati Chakra has also been explained in detail so that if you first build the device then it will be easier to take any kind of decision.

Apart from this, in which Vikrami, Shaka or AD pattern the end period of Dwapara Yuga or the beginning of Kali Yuga took place, its calculation along with the month and year entered is also given. The most enjoyable is the Kalisamvat decision chapter. The calculation of which date or which Vikrami Samvat month and in which entry the beginning of Kalisamvat should be considered at present has been given in detail.