There are 12 Amavasya in 2020 – one in each month as per Gregorian calendar and a couple of Amavasyas in August. Amavasya has great significance in Hindu rituals and Hindu calendar.
Ashada Amavasya is referred to as Chukkala Amavasya; Shravana Amavasya is celebrated as Polala Amavasya (Bail Pola), Bhadrapada / Ashwin Amavasya is observed as Mahalaya Amavasya (Sarva Pitru Amavasya).
Somvati Amavasya (Amavasya on Monday), Shani Amavasya (Amavasya on Saturday), Bhaumvati Amavasya (Amavasya on Tuesday) and Bhanu Amavasya (Amavasya on Sunday) are the meritorious Amavasya Vrat. In 2020, Somvati Amavasya falls thrice, Shanaischari Amavasya twce, Bhaumvati Amavasya twice and Bhanu Amavasya twice in this English calendar year.
On Amavasya, devotees also offer Pitru Tharpan, Pinda Daan and other Pitru rituals.
Amavasya is considered as inauspicious day to perform any auspicious program in all Hindu calendars but in Tamil calendar Amavasai is the best day to perform such activities. As per North Indian calendars followed in Himachal Pradesh, Uttar Pradesh, Madhya Pradesh, Chhattisgarh, Bihar, Jharkhand, Orissa, Rajasthan, etc.. Amavasya is the fifteenth day whereas in other calendars followed in Gujarat, Maharashtra, Karnataka and Andhra Pradesh, Amavasya is the last day for a month.
Amavasya Tharpan or Amavasi Tarpan is the major ritual followed on Amavasya. Hindus offer Pinda and Shraddh karma to dead ancestors. It is also called Amavasya Pitru Tharpanam.
Amavasya 2020 dates
Friday, 24 January 2020 – Magha Amavasya | Darsha Amavasya | Mauni Amavasya (Thai Amavasai) (Makara Masam Karuthu Vavu)
Sunday, 23 February 2020 – Phalguna Amavasya | Darsha Amavasya | Bhanu Amavasya (Maasi Amavasai) (Kumbha Masam Karuthu Vavu)
Monday|Tuesday, 23-24 March 2020 – Chaitra Amavasya | Darsha Amavasya | Somvati Amavasya | Bhaumvati Amavasya (Panguni Amavasai) (Meena Masam Karuthu Vavu)
Wednesday, 22 April 2020 – Vaishakha Amavasya | Darsha Amavasya (Chithirai Amavasai) (Meda Masam Karuthu Vavu)
Friday, 22 May 2020 – Jyeshta Amavasya | Darsha Amavasya (Vaigasi Amavasai) (Edavam Masam Karuthu Vavu)
Saturday|Sunday, 20-21 June 2020 – Ashada Amavasya | Shani Amavasya (Aani Amavasai) (Mithuna Masam Karuthu Vavu)
Monday, 20 July 2020 – Shravana Amavasya | Darsha Amavasya | Somvati Amavasya (Aadi Amavasai) (Karkadika Masam Karuthu Vavu)
Tuesday|Wednesday, 18-19 August 2020 – Bhadrapada Amavasya | Darsha Amavasya | Bhaumvati Amavasya (Aavani Amavasai) (Chingam Masam Karuthu Vavu)
Thursday, 17 September 2020 – Ashwin Amavasya | Darsha Amavasya (Aavani Amavasai) (Kanni Masam Karuthu Vavu)
Friday, 16 October 2020 – Adhika Maasa Amavasya | Adhika Ashwin Amavasya | Adhika Darsha Amavasya (Purattasi Amavasai) (Kanni Masam Karuthu Vavu)
Saturday|Sunday, 14|15 November 2020 – Kartika Amavasya | Darsha Amavasya | Shani Amavasya (Aippasi Amavasai) (Thulam Masam Karuthu Vavu)
Monday, 14 December 2020 – Margashirsha Amavasya | Darsha Amavasya | Somvati Amavasya (Karthikai Amavasai) (Vrischika Masam Karuthu Vavu)