Original sentence: (The month of February in 2004 falls in 1410 according to the Bengali Calendar., 2004 is a leap year, so the corresponding year 1410 was a leap year.However, since the people of the West Bengal follow the previous calendar (which is not fixed with respect to the Western calendar), sometimes the two Bengals celebrate Pohela Baishakh on different days.In Bangladesh, it is celebrated on April the 14th every year.The first of Baishakh, Pohela Baishakh, is the Bengali New Year's Day
Edited sentence: (The month of February in 2004 falls in 1410 according to Bengali Calendar.2004 is a leap year, so corresponding 1410 was leap year.Pohela Baishakh is the Bengali New year, celebrated 14th April every year in Bangladesh.Unfortunately as the people of the West Bengal follow the previous calendar, sometimes, the two bengals celebrate Pahela Baishakh at different days