♦ BIMSTEC (the Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Collaboration) Day is celebrated every year on June 6. 

♦ BIMSTEC is an international regional association consisting of seven member countries in the Bay of Bengal area: Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka, and Thailand.

♦ Its main goal is to promote diverse technical and economic collaboration among these nations. 

♦ BIMSTEC was formed on 6 June 1997 through the acceptance of the Bangkok Declaration.

♦ Originally referred to as BIST-EC (Bangladesh, India, Sri Lanka, Thailand Economic Cooperation), it later incorporated Myanmar and subsequently Nepal and Bhutan.

♦ The main office of the organisation is located in Dhaka, Bangladesh. Since then, 6th June is celebrated as BIMSTEC Day.

♦ Headquartered in Dhaka, Bangladesh, BIMSTEC focuses on cooperation across multiple areas such as trade, technology, energy, tourism, fisheries, and agriculture.