For those of us who reside abroad, we are unable to follow Srirangam panchangam, etc. We follow online-based panchangams on the internet. Hence, pray let us know when Sri Nrusimha Jayanthi occurs. Is Sri Nrusimha Jayanthi on Vaikaci Shukla paksha Trayodasi or Caturdasi? For Tiruvaradhanam of the incarnation period, should the tithi be based on sunrise or sunset? It is stipulated that at least 6 nazhigai-s the tithi (whether based on sunrise or sunset) must exist. If not, for us to perform the Tiruvaradhanam the next day, which dosham must we consider?

Sri Nrisimha Jayanthi occurs during the Vaisakha month. Vaisakha month is the 30-day period after Citthirai amavasyai till Vaikaci amavasyai. Sri Nrusimha Jayanthi tithi is Shukla paksha Caturdasi tithi.

If Trayodasi is associated 6 nazhigai-s with Caturdasi, even if Caturdasi exists for the rest of the day, it is considered tainted and Sri Nrusimha Jayanthi is not celebrated on that day and must be celebrated only on the following day. The apt period for Sri Nrusimha Jayanthi is when there is no association of 6 nazhigai Trayodasi with Caturdasi.

The following day, Caturdasi must be present at least during the sunrise. Only then Sri Nrusimha Jayanthi can be celebrated on that day. As per another way to determine Sri Nrusimha Jayanthi, when Catudasi is not present during sunrise on the following day, and even when Caturdasi is associated with Trayodasi during the previous day, then there is no option but to celebrate Sri Nrusimha Jayanthi the previous day itself.