Commemorates the Buddha’s descent from Tavatimsa heaven after teaching the Abhidhamma (higher doctrine) to his mother and the assembled devas. The Theravada counterpart to the Tibetan Lhabab Duchen. The Abhidhamma represents the most systematic and analytical presentation of the Buddha’s teaching, mapping the constituents of reality at the subtlest level. In Myanmar, this is a major national holiday (Thadingyut Festival of Lights) marked by illuminations honoring the Buddha’s return.