Nidhan Shanti :
This Shanti is performed on the 13th day from the death of a person in order to remove all inauspicious elements generated due to the death. During this ritual, Puja of Varun & Mrityunjay is performed along with chant of Vedic Hymns.
Other Inauspicious Shanti :
Following are some other different Inauspicious Shanti, to be performed for different reasons.
Pratikool Dosh Shanti, Shree Pujanaadi Shanti, Kak Maithun Darshanaadi Shanti, Palli Sarath Shanti, Deep Patan Shanti, Sarvaadbhut Shanti, etc.