दीपोत्सव चतुर्दशी/यम तर्पणम्

Observed on Kṛṣṇa-Caturdaśī tithi of Āśvayuja (lunar) month. Perform Tarpana to Yamadharmaraja (even those with father). jIvatpitA'pi kurvIta tarpaNaM yamabhISmayoH