Joishtho (, Jyôishţhô or জৈষ্ঠ্য, Jôishţhyô, colloquially জেঠ Jeţh) is the second month and the last month for summer of the Bengali calendar. This month lies between the second half of May and the first half of June.

Etymology

The name of the month is derived from the star Jyestha, which is the 18th nakshatra or lunar mansion in Hindu astronomy and Vedic astrology associated with the string of the constellation Scorpii. It is the constellation visible on the meridian at mid-night from Indian sub-continent during this month.

Observances marked (per official use in Bangladesh)