Falgun or Phalgun or Phagun is the eleventh month of the year in the Bengali calendar, the Assamese calendar, and the Nepali calendar. In the revision of the Bengali calendar used in Bangladesh since October 2019, the month has 29 days in common years or 30 in leap years of the Gregorian calendar. In the previous version of the calendar, used in Bangladesh from 1987 through October 2019, Falgun had 30 days in common years or 31 days in leap years. The month has 29 or 30 days, based on the true movements of the Sun, in the old non-reformed Bengali calendar, still used in West Bengal, and in the Nepali calendar.