2047
- Saturday, 26 January 2047 · Mauni Amavasya (Shani)
- Sunday, 24 February 2047 · Magha Amavasya
- Tuesday, 26 March 2047 · Phalguna Amavasya (Bhaumvati)
- Thursday, 25 April 2047 · Chaitra Amavasya
- Friday, 24 May 2047 · Vat Savitri Amavasya
- Sunday, 23 June 2047 · Jyeshtha Amavasya
- Monday, 22 July 2047 · Hariyali Amavasya (Somvati)
- Wednesday, 21 August 2047 · Shravana Amavasya
- Thursday, 19 September 2047 · Mahalaya / Sarvapitri Amavasya
- Saturday, 19 October 2047 · Diwali (Lakshmi Puja) Amavasya (Shani)
- Sunday, 17 November 2047 · Kartika Amavasya
- Monday, 16 December 2047 · Margashirsha Amavasya (Somvati)
2048
- Wednesday, 15 January 2048 · Mauni Amavasya
- Thursday, 13 February 2048 · Magha Amavasya
- Saturday, 14 March 2048 · Phalguna Amavasya (Shani)
- Monday, 13 April 2048 · Adhika Chaitra Amavasya (Somvati)
- Tuesday, 12 May 2048 · Chaitra Amavasya (Bhaumvati)
- Thursday, 11 June 2048 · Vat Savitri Amavasya
- Saturday, 11 July 2048 · Jyeshtha Amavasya (Shani)
- Sunday, 9 August 2048 · Hariyali Amavasya
- Tuesday, 8 September 2048 · Shravana Amavasya (Bhaumvati)
- Wednesday, 7 October 2048 · Mahalaya / Sarvapitri Amavasya
- Friday, 6 November 2048 · Diwali (Lakshmi Puja) Amavasya
- Saturday, 5 December 2048 · Kartika 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.