Kaṭhina
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Kathina is a Buddhist festival which comes at the end of Vassa, the three-month rainy season retreat for Theravada Buddhists. It lasts one month, beginning after the full moon of the eleventh month in the Lunar calendar (usually October).
It is a time of giving, for the laity to express gratitude to monks. Lay Buddhists bring donations to temples, especially new robes for the monks.