Loi Kratong (known locally as Yi Peng): Held on a full-moon night in November. Every year thousands of people assemble floating banana-leaf containers (krathong) decorated with flowers and candles onto the waterways of the city to worship the Goddess of Water. Lanna-style hot-air lanterns (khom fai) are launched into the air. These are believed to help rid the locals of troubles and are also 
taken to decorate houses and streets. 