Dear Chanchal, the postponed exam date of ATMA exam is 2oth June 2020. Previously the exam date was announced to be on 24th May 2020, but due to covid-19 crisis, the exam date has been postponed.
For more details, keep a regular check on the official website
https://www.atmaaims.com/?AspxAutoDetectCookieSupport=1
I hope this helps you!
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