for the buddhist, there are several celebrations on the full moon days in a year . the Buddhist in thailand, burma, sri lanka, cambodia and lao, the new york keep 3 days from the first full moon day in april. every may on the night of the full moon. they celebrate the birth of the buddha over 2500 years. in india, this celebration for buddha is birthday is called "vesak" thr name of month in the lndian calendar