The most important month in the Tibetan lunar calendar is Saga Dawa, the 4th month. This year Saga Dawa starts on May 23, 2020, and runs until June 21.

The 15th day of this lunar month, the full moon day is called. Düchen means “great occasion” and this day is the holiest day of the year for Tibetan Buddhists. This year, Saga Dawa Düchen falls on June 5, 2020. Saga Dawa Düchen commemorates the birth, enlightenment, and parinirvana of Buddha Shakyamuni. In other Buddhist traditions, it is known as Vesak or is sometimes called Buddha Day.