There are 12 Amavasya in 2021 – 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 2021, Somvati Amavasya falls once, Shanaischari Amavasya twice, Bhaumvati Amavasya thrice 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 2021 dates
Paush Amavasya – 12-13 January 2021, Tuesday-Wednesday (Margashirsha Amavasya in Amavasyant Chandramana calendar) – Bhaum Amavasya
Magha Amavasya – 11 February 2021, Thursday (Poush Amavasya)
Phalgun Amavasya – 13 March 2021, Saturday (Magha Amavasya) – Shani Amavasya
Chaitra Amavasya – 11 April 2021, Sunday (Phalgun Amavasya) – Bhanu Amavasya | 12 April 2021, Monday – Somvati Amavasya
Vaishakha Amavasya – 11 May 2021, Tuesday (Chaitra Amavasya) – Bhaum Amavasya
Jyeshta Amavasya – 10 June 2021, Thursday (Vaishakha Amavasya)
Ashada Amavasya – 9 July 2021, Friday (Jyeshta Amavasya) | 10 July 2021 – Shani Amavasya
Shravan Amavasya – 8 August 2021, Sunday (Shravan Amavasya) – Bhanu Amavasya
Bhadrapada Amavasya – 6-7 September 2021, Monday-Tuesday (Shravan Amavasya) – Somvati Amavasya – Bhaumvati Amavasya
Ashwin Amavasya – 6 October 2021, Wednesday (Bhadrapad Amavasya)
Kartik Amavasya – 4 November 2021, Thursday (Ashwin Amavasya)
Margashirsha Amavasya – 3-4 December 2021, Friday-Saturday (Kartik Amavasya) – Shani Amavasya