Dhammachakra Anuvartan Din or Dhammachakra Anuvartan Diwas (translation: Dhamma Wheel's Promulgation Day) is a Buddhist festival in India.

This is the day to celebrate the Buddhist acceptance of B. R. Ambedkar and his approximately 3,80,000 followers on 14 October & 2,20,000 followers on 15 October 1956 at Deekshabhoomi, Nagpur.

Dhammachakra Anuvartan Din is a day when the architect of the Indian Constitution Dr. Babasaheb Ambedkar renounced Hinduism and accepted Buddhism.

[3][4][5][6] Every year on Ashoka Vijayadashami, millions of Buddhists gather at Deekshabhoomi to celebrate the mass conversion.

[7] October 2016 marked the Every year, thousands of people convert to Buddhism on Dhammachakra Anuvartan Din and Ashoka Vijayadashami at Deekshbhoomi, Nagpur.