Falgun

Falgun or Phalgun (; ; ) is the eleventh month in the Bengali calendar and Nepali calendar. This month is named after the star Uttorfalguni ( "Uttôrfalguni"). It marks the arrival of spring, the sixth and final season in Bangladesh, West Bengal, Nepal and Assam. The first of Falgun usually falls on 13 February of the Gregorian Calendar.
Culture.
Bangladesh.
The first day of Falgun is celebrated as Pohela Falgun in Bangladesh, the celebrations first took place in 1991 and where organized Fine Arts Institute of Dhaka University. According to the latest revised calendar Falgun now consists of 29/30 days instead of 30/31 days and starts from 14 February instead of 13 February. 
Nepāl.
In Nepāl, Holi, known locally as "Fāgu" "Purnimā" (पुर्णिमा), falls during a full moon night of this month. In many parts of the country, especially in the urban areas, this day is celebrated by spraying colorful water-filled "pumps" ("pichkari," पिचकारी) and colorful powders at each other. Traditionally, women wear yellow saris to celebrate this day.