Kaṭhina
Kathina is a Buddhist festival which comes at the end of Vassa, the three-month rainy season retreat for Theravada Buddhists in Bangladesh (known as Kaṭhina Cībar Dān), Cambodia, Myanmar, Thailand, India, Sri Lanka, Vietnam, Laos, Malaysia, and Singapore. The season during which a monastery may hold Kathina is one month long, beginning after the full moon of the eleventh month in the Lunar calendar (usually October).