Jyeshtha Purnima is the full moon of the month of Jyeshtha — the 'eldest' month in Sanskrit, named so as it contains the nakshatra Jyeshtha near the full moon. It falls in May or June, right in the heart of the Indian summer. The month is associated with the scorching heat of Agni (fire) and is considered a time of purification through austerity. The full moon of Jyeshtha is a day for water charity — giving cool water to the thirsty is considered the highest act of merit during summer — as well as for ancestral rites and the powerful Vata Savitri Vrat.
Vata Savitri Vrat: The Banyan Tree Fast
Vata Savitri Vrat (also called Savitri Amavasya in North India or Vat Purnima in Maharashtra) is one of the most significant women's fasts in the Hindu calendar. It is observed by married women for the long life of their husbands, and involves circling the Vata Vriksha (Banyan tree) while tying a thread around its trunk. The Banyan tree is associated with long life and the permanence of the family, and is considered an abode of Savitri — the goddess who brought her husband Satyavan back from the jaws of death through sheer devotion and wit when Yama came to claim him. The fast re-enacts Savitri's determination: no power can separate devoted love.
Water Charity and Merit
The month of Jyeshtha is the hottest of the year in Andhra and Telangana. In the ancient texts, giving cool water to a thirsty traveller in Jyeshtha is described as an act of supreme charity — equal to the merit of giving a cow or performing a Yajna. Earthen water pots (ghata) placed at the doorstep for passers-by (a tradition called Praja Seva or Jala Dana) are a common sight in many traditional households during this month. On the Purnima day especially, families bring water pots, buttermilk, and cool drinks to temples, street corners, and public spaces. This act of giving is considered deeply meritorious and accumulates punya for the family's ancestors.
Nirjala Ekadashi: The Waterless Fast
Just before Jyeshtha Purnima comes the Nirjala Ekadashi — the eleventh day of the bright fortnight of Jyeshtha. 'Nirjala' means without water, and devotees who observe this Ekadashi fast completely — no food, no water — for a full day, typically in the peak of summer heat. It is considered the most powerful of all Ekadashis: the Bhishma Parva states that Bhima, who could not fast on all 24 annual Ekadashis, was advised by Vyasa to observe only the Nirjala Ekadashi to earn the merit of all 24 fasts combined. Those who observe it are said to be freed from all sins and granted liberation. The combination of Nirjala Ekadashi followed by Jyeshtha Purnima makes this a two-day peak of spiritual merit.