Our user Bob reports that Google Thailand is celebrating Loy Krathong festival with a beautiful doodle showing candles and rafts floating in full moon.
Loy Krathong is held on the full moon of the 12th month in the traditional Thai lunar calendar. In the western calendar this usually falls in November. “Loi” means “to float”. “Krathong” is a raft about a handspan in diameter traditionally made from a section of banana tree trunk (although modern-day versions use specially made bread ‘flowers’ and may use styrofoam), decorated with elaborately-folded banana leaves, flowers, candles, incense sticks etc.
The festival probably originated in India as a Hindu festival similar to Deepavali as thanksgiving to the deity of the Ganges with floating lanterns for giving life throughout the year. [wiki]