Vap Full Moon Poya Day is celebrated in Sri Lanka on the day of the full moon in the month of Vap, which is the seventh month of the Sinhalese calendar. This holiday typically falls in October according to the Western calendar and marks the completion of the Buddhist fasting period. It commemorates Buddha’s sermon on Abhidhamma to the gods in Tavatimsa. On this day, it is customary for government officials to enforce regulations that prohibit the opening of liquor stores, nightclubs, and restaurants serving meat and fish, reflecting the day’s holiness. Each full moon in Sri Lanka is recognized as a Poya Day, with unique names and significances, and is a time for reflection on important moments in Buddhist history.