Saka Dawa Festival is the holiest Buddhist festival in Leh- Ladakh. On this day, Sakyamuni was born. Later, he went into Buddha hood and attained Nirvana. As per the belief of Buddha followers, one merit during this festival is equal to many merits amassed other days. Saka Dawa is significant of ‘Disu month’ according to Tibetan calendar. There are 28 constellations in Tibetan calendar and Disu is one of those. Disu constellation appears in fourth month and hence, Disu is the fourth month of Tibetan calendar. Flag pole changing is the major activity performed during celebrations of this festival. The lamas of different monasteries perform this ritual.