Reply To: Which ayanamsa should i use for my horoscope by date of birth software? May 15, 2016 at 5:27 am #16483 TMRModerator Read my blog navagrahastro.blogspot.in. You can use Sayana system or Nirayana system. The ultimate result will be the same. But you must be consistent in your usage to evaluate a horoscope. Like you can use meters or inches to measure the length.