Holi festival is celebrated as Dol Purnima or Dol Jatra or Dol Yatra in Bengal. It is celebrated on Falgun Purnima, the Full Moon day in Falgun month. In 2017, Holi Dol Jatra date is March 12.
Dol Purnima is dedicated to Lord Sri Krishna and the festival is also celebrated as Basantotsab or Vasantotsav. This festival has a great significance as it is the last festival in Bengali calendar or Bengali Panjika or Panchang.
Dol Purnima or Falgun Purnima also marks the birthday of Chaitanya Mahaprabhu, a great Vaishnava saint, who lived in 15th Century. He was known for his great compilation of Sankirtanas dedicated to Lord Vishnu and Sri Krishna.