2045
- Wednesday, 18 January 2045 · Mauni Amavasya
- Thursday, 16 February 2045 · Magha Amavasya
- Saturday, 18 March 2045 · Phalguna Amavasya (Shani)
- Monday, 17 April 2045 · Chaitra Amavasya (Somvati)
- Tuesday, 16 May 2045 · Vat Savitri Amavasya (Bhaumvati)
- Thursday, 15 June 2045 · Adhika Jyeshtha Amavasya
- Friday, 14 July 2045 · Jyeshtha Amavasya
- Saturday, 12 August 2045 · Hariyali Amavasya (Shani)
- Monday, 11 September 2045 · Shravana Amavasya (Somvati)
- Tuesday, 10 October 2045 · Mahalaya / Sarvapitri Amavasya (Bhaumvati)
- Wednesday, 8 November 2045 · Diwali (Lakshmi Puja) Amavasya
- Friday, 8 December 2045 · Kartika Amavasya
2046
- Sunday, 7 January 2046 · Margashirsha Amavasya
- Monday, 5 February 2046 · Mauni Amavasya (Somvati)
- Wednesday, 7 March 2046 · Magha Amavasya
- Friday, 6 April 2046 · Phalguna Amavasya
- Sunday, 6 May 2046 · Chaitra Amavasya
- Monday, 4 June 2046 · Vat Savitri Amavasya (Somvati)
- Wednesday, 4 July 2046 · Jyeshtha Amavasya
- Thursday, 2 August 2046 · Hariyali Amavasya
- Friday, 31 August 2046 · Shravana Amavasya
- Sunday, 30 September 2046 · Mahalaya / Sarvapitri Amavasya
- Monday, 29 October 2046 · Diwali (Lakshmi Puja) Amavasya (Somvati)
- Tuesday, 27 November 2046 · Kartika Amavasya (Bhaumvati)
- Thursday, 27 December 2046 · Margashirsha 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.