The name of the month is derived from the position of the Sun near the star Bishakha (বিশাখা). The first day of Boishakh is celebrated as the Pôhela Bôishakh or Bengali New Year's Day. The day is observed with cultural programs, festivals and carnivals all around the country. The day of is also the beginning of all business activities in Bangladesh and neighboring Indian state of West Bengal and Tripura. The traders starts new fiscal account book called হালখাতা Halkhata. The accounting in the Halkhata begins only after this day. It is celebrated with sweets and gifts with customers.
The month of Boishakh also marks the official start of Summer. The month is notorious for the afternoon storms called Kalboishakhi (Nor'wester). The storms usually start with strong gusts from the north-western direction at the end of a hot day and cause widespread destruction.
- Mundu, Boniface (2013). The Silent Short Stories: A Word of Truth. CreateSpace Independent Publishing Platform. p. 87. ISBN 978-1-4689-3981-1.
- "Another New Year,Another Resolution". Daily Sun. Dhaka. Retrieved 1 June 2014.
- Haider, M. H. (8 April 2014). "Hal Khata Time-bound, Yet Timeless". The Daily Star. Retrieved 1 June 2014.
- "Halkatha – An explanation". Amader Kotha. Retrieved 1 June 2014.
- Shaw, Rajib; Mallick, Fuad; Islam, Aminul (2013). Disaster Risk Reduction Approaches in Bangladesh. Springer. p. 98. ISBN 978-4-431-54252-0.
- "Kalboishakhis - Bangladesh's deadly storms". Al Jazeera. 29 April 2014. Retrieved 1 June 2014.
- Huq, S.M. Imamul; Shoaib, Jalal Uddin Md. (2013). The Soils of Bangladesh. Springer. pp. 15–16. ISBN 978-94-007-1128-0.