Pahela Baishakh (পহেলা বৈশাখ) is the first day of Bengali calendar. It is celebrated on 14 April as a national holiday in Bangladesh. The celebration of Pohela Boishakh has become an integral part of Bengalis since it began over six centuries ago. Mughal Emperor Akbar introduced the Bangla calendar—in 1556 of the Gregorian calendar—in a bid to streamline the timing of land tax collection in the then-"Subah Bangla" region, much of which falls under current-day Bangladesh. The day is now a public holiday.