Chökhor Duchen is celebrated on the 4th day of the 6th lunar month (14 July in 2021). It is one of the days considered as very auspicious in the Buddhist calendar and commemorates the day Buddha first taught the Dharma at Deer Park, Sarnath, India. It was at this first turning of the Dharma wheel that he taught the Four Noble Truths. Any virtuous acts and practices on this day are considered to be of vast benefit and merit.