Ashtanga Yoga is usually not taught on Moon days. A Full Moon or New Moon sequence will be taught on those days.
Moon days 2021:
Full Moon:
Thursday, January 28
Friday, February 26
Sunday, March 28
Monday, April 26
Wednesday, May 26
Thursday, June 24
Friday, July 23
Sunday, August 22
Monday, September 20
Wednesday, October 20
Friday, November 19
Sunday, December 19
New Moon:
Wednesday, January 13
Thursday, February 11
Friday, March 12
Sunday, April 11
Tuesday, May 11
Thursday, June 10
Friday, July 9
Sunday, August 8
Monday, September 6
Wednesday, October 6
Thursday, November 4
Friday, December 3