List of dates when Amavasya occurs for next 12 months from April 2021.
May 11th 2021
June 10th 2021
July 9th and 10th 2021
August 8th 2021
September 7th 2021
October 6th 2021
November 4th 2021
December 4th 2021
Google public calendar link: https://calendar.google.com/calendar/u/1?cid=NHRxb2drbzQ5cjgwZGJzOHY5ZXYxbThvMXNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ