2051
- Thursday, 12 January 2051 · Margashirsha Amavasya
- Saturday, 11 February 2051 · Mauni Amavasya (Shani)
- Sunday, 12 March 2051 · Magha Amavasya
- Tuesday, 11 April 2051 · Phalguna Amavasya (Bhaumvati)
- Wednesday, 10 May 2051 · Chaitra Amavasya
- Thursday, 8 June 2051 · Vat Savitri Amavasya
- Saturday, 8 July 2051 · Jyeshtha Amavasya (Shani)
- Sunday, 6 August 2051 · Hariyali Amavasya
- Tuesday, 5 September 2051 · Shravana Amavasya (Bhaumvati)
- Wednesday, 4 October 2051 · Mahalaya / Sarvapitri Amavasya
- Friday, 3 November 2051 · Diwali (Lakshmi Puja) Amavasya
- Sunday, 3 December 2051 · Kartika Amavasya
2052
- Tuesday, 2 January 2052 · Margashirsha Amavasya (Bhaumvati)
- Wednesday, 31 January 2052 · Mauni Amavasya
- Friday, 1 March 2052 · Magha Amavasya
- Saturday, 30 March 2052 · Phalguna Amavasya (Shani)
- Monday, 29 April 2052 · Chaitra Amavasya (Somvati)
- Tuesday, 28 May 2052 · Vat Savitri Amavasya (Bhaumvati)
- Wednesday, 26 June 2052 · Jyeshtha Amavasya
- Friday, 26 July 2052 · Hariyali Amavasya
- Saturday, 24 August 2052 · Shravana Amavasya (Shani)
- Sunday, 22 September 2052 · Mahalaya / Sarvapitri Amavasya
- Tuesday, 22 October 2052 · Diwali (Lakshmi Puja) Amavasya (Bhaumvati)
- Thursday, 21 November 2052 · Kartika Amavasya
- Saturday, 21 December 2052 · Margashirsha Amavasya (Shani)
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.