It has always been the tradition in Ashtanga Yoga to rest from our yoga practice on new and full moon days. On these days, the sun and the moon are in a line relative to the position of the earth. Consequently, their gravitational forces are all combined, and thus the effect of the planets is more pronounced.
In observance of this tradition, Ashtanga yoga will not be taught on Full and New moon days for 2018. Instead, an all-levels vinyasa class will be held.