The first day of Bengali calendar has been observed for thousands of years by Bengali Hindus with cultural and religious fervor although nowadays people of other
religions also celebrate this festival. It was first
officially and broadly observed by Shashanka— the first great King of Bengal. People of
West Bengal, Assam, Tripura, and Bangladesh celebrate this day.
On
the day of Poila Boishakh, people worship God Ganesh and Devi Lakshmi for the
prosperity of the world.
Poila Boishakh is
differently celebrated by the people of Bangladesh, and it's known as Pohela Boishakh.