The decision about this date for celebrating Shagaa was made by the lamas of the republic at a general meeting at the Tsechenling temple with participation of representatives of Buddhist clergy from all various kozhuuns.  This is also the date that Buryat Buddhists will start the celebrations of White Moon Sagaalgan.

The decision of the general meeting of the lamas will be submitted to the Great Khural of Republic Tuva for decisions regarding the day of observation of the holiday according to the Constitution of the republic.

tuvaonline.ru