[custom_adv] Karva Chauth is a one-day festival celebrated by Hindu women four days after purnima (a full moon) in the month of Kartika. Dates differ according to the Gregorian calendar which is tabular and not based according to constellations. [custom_adv] Karva Chauth, like many Hindu festivals, is based on the lunisolar calendar which accounts for all astronomical positions, especially positions of the moon which is used as a marker to calculate important dates. [custom_adv] On Karva Chauth women, especially in Northern India, who are married fast from sunrise to moonrise for the safety and longevity of their husbands. [custom_adv] The Karva Chauth fast is traditionally celebrated in the states of Rajasthan, Prayagraj Uttar Pradesh, Himachal Pradesh, SIDHI MADHYA PRADESH, Haryana, Punjab, Delhi and as Atla Tadde in Andhra Pradesh The festival falls on the fourth day after the full moon, in the Hindu lunisolar calendar month of Kartik. [custom_adv] Historically, Karva Chauth was celebrated as a prayer for the long life of soldiers in the war, and by extension today refers to the long life of a married husband. [custom_adv] Karva is another word for 'pot' (a small earthen pot of water) and chauth means 'fourth' in Hindi (a reference to the fact that the festival falls on the fourth day of the dark-fortnight, or Krishna paksh, of the month of Kartik).