Ekadashi is a sacred day, occuring twice a month in the Hindu
calendar - on the eleventh day of the bright half - called Shukla Paksha and on
the eleventh of the dark half called Vad Paksha. A fast is to be observed on
this day by all Hindus. During Ekadashi, a waterless fast is ideal. However
those unable to fast may take liquids, or if needed farari foods.