Thithi and Zero Rasi or Dagdha rasi or Rashi under Fire
In Sanskrit Thithi means reduction and Yoga means addition. Thus the former is got by the difference and the latter by addition of the longitudes of Sun and Moon. There are 30 Thithis in all in a lunar month distributed to 360 degrees of the Zodiac. Thus each Thithi has a span of 12 degrees in the Zodiac the first one commencing from the point of conjunction of Sun and Moon ( New Moon ). By name there are 14 Thithis repeating in the two halves of the month ( Sukla Paksha and Krishna Paksha )( Moon – Sun ) divide by 12 = (1-9-54) – (2-4-34) = 11-5-20 or 335 Degrees 20 Minutes. Add 12 Rasis to Moon if it is less than Sun’s.
Dividing 335-20 by 12 we get quotient 27 and remainder 11-20. So it is the fag end of 28th Thithi viz. Krishna Paksha Thrayodashi.
So far very few seem to have had the knowledge of using Thithi for prediction except for Muhurtams. I will reveal how Thithi acts predominantly in the evaluation of the merits of a Horoscope. For one born in a thithi some signs become useless. In Sanskrit it is called Dagdha Rashi meaning Burnt Rasi. For Easy understanding I call it Zero Rasi. This aspect is discussed very briefly in Vidya Madhaviya a Sanskrit edition by the Mysore Oriental Library. Even there the theory is not quite correctly stated. The following table shows the Zero Rasis of a thithi, which can be followed safely.
Padyami Tula and Makara
Dwitiya Dhanush and Meena
Thritiya Simha and Makara
Chaturthi Vrishbha and Kumbha
Panchami Mithuna and Kanya
Shashti Mesha and Simha
Saptami Kataka and Dhanush
Ashtami Mithun and Kanya
Navami Simha and Vrischika
Dasami Simha and Vrischika
Ekadashi Dhanush and Meena
Dwadashi Thula and Makara
Thryodashi Vrishbha and Simha
Chaturdashi Meena, Mithuna, Kanya and Dhanusha
Full Moon None
New Moon None
Thus you see that on all Full Moon and New Moon days there is no Zero Rashi or Dagadha Rashi or Rashi under Fire. On chaturdashi there are four Zero Rasis. On the other Thithis there are two Zero Rasis.
