For tithi calculations, we have to derive solar longitude and lunar longitudes first. Then only we can calculate tithi in Panchangam.

Could you please help me to find solar longitude and lunar longitude for Panchangam

  • That's not a one line formula. It may cover one full textbook length of explanations and reference tables. For your interest, please refer this or this – AnilGoyal Dec 17 '20 at 8:36
  • thank you so much @AnilGoyal sir – Kalyan Dammu Dec 17 '20 at 14:19
  • Call me Anil :). If you can read in hindi, I know there is a book published by MotilalBanarasiDas on these planetary longitudinal calculations for vedic astrology. I read that book. But in this computer era, these long and tiring calculations are not so much used. Still if you want I can find the name of that book. – AnilGoyal Dec 17 '20 at 14:51

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