Dolyatra is last festival of the Bengali year in West Bengal. It is a festival of colors.
Celebration\ Observance
People celebrate first by worshipping Krishna and Radha. The rest of the day is filled with indulgence of colors. It is a restricted holiday where government and businesses are usually open.
History
Dolyatra has been celebrated since the ancient times. On this day, Lord Krishna made his love known to Radha as legend describes.