2036
- Monday, 28 January 2036 · Mauni Amavasya (Somvati)
- Wednesday, 27 February 2036 · Magha Amavasya
- Thursday, 27 March 2036 · Phalguna Amavasya
- Saturday, 26 April 2036 · Chaitra Amavasya (Shani)
- Sunday, 25 May 2036 · Vat Savitri Amavasya
- Tuesday, 24 June 2036 · Jyeshtha Amavasya (Bhaumvati)
- Wednesday, 23 July 2036 · Hariyali Amavasya
- Thursday, 21 August 2036 · Shravana Amavasya
- Saturday, 20 September 2036 · Mahalaya / Sarvapitri Amavasya (Shani)
- Sunday, 19 October 2036 · Diwali (Lakshmi Puja) Amavasya
- Monday, 17 November 2036 · Kartika Amavasya (Somvati)
- Wednesday, 17 December 2036 · Margashirsha Amavasya
2037
- Friday, 16 January 2037 · Mauni Amavasya
- Sunday, 15 February 2037 · Magha Amavasya
- Monday, 16 March 2037 · Phalguna Amavasya (Somvati)
- Wednesday, 15 April 2037 · Chaitra Amavasya
- Friday, 15 May 2037 · Vat Savitri Amavasya
- Saturday, 13 June 2037 · Adhika Jyeshtha Amavasya (Shani)
- Monday, 13 July 2037 · Jyeshtha Amavasya (Somvati)
- Tuesday, 11 August 2037 · Hariyali Amavasya (Bhaumvati)
- Wednesday, 9 September 2037 · Shravana Amavasya
- Friday, 9 October 2037 · Mahalaya / Sarvapitri Amavasya
- Saturday, 7 November 2037 · Diwali (Lakshmi Puja) Amavasya (Shani)
- Sunday, 6 December 2037 · Kartika Amavasya
How the date is fixed
Every new-moon day, taken as the day on which Amavasya is running at sunrise. One that falls on a Monday is called Somvati, on a Tuesday Bhaumvati, and on a Saturday Shani Amavasya. Amavasya ends the dark half, so both month names are given.
About
Amavasya is the tithi in which the Moon's longitude returns to the Sun's, closing the dark half and, in amanta reckoning, the month itself. It is the tithi of the pitris, and tarpana for ancestors is its regular observance; the aparahna (afternoon) is the governing period for shraddha, so the day whose afternoon carries Amavasya is chosen. Several named Amavasyas stand out: Sarva Pitru Amavasya ending Pitru Paksha, Diwali on Ashwina Amavasya, Mauni Amavasya in Pausha, and any Amavasya on a Monday (Somvati) or Saturday (Shani). Solar eclipses can only occur on Amavasya, which is why eclipse rules are tied to it.
How it is observed
Tarpana for ancestors in the afternoon, river bathing on Somvati and Mauni Amavasya, and lamps at dusk.