អ្វីជាកឋិនទាន? Kathina
https://preahthor.blogspot.com/2013/06/blog-post_25.html
Kathina is a Buddhist festival which comes at the end of Vassa, the three-month rainy season retreat for Theravada Buddhists. The season during which a monastery may hold a Kathina festival is one month long, beginning after the full moon of the eleventh month in the Lunar calendar (usually October).