Indra Ekadashi is basically a fast that is observed on 16 September 2017 or 11th Tithi according to the Hindu calendar. There are in total two fasts in a month that are observed, one is observed during Shukla Paksha and the other during Krishna Paksha. This fast is generally observed by the Lord Vishnu devotees as a way to seek his blessings. Ekadashi fasting is a three day event in which devotees take single meal in the afternoon a day before the day they will be fasting to make sure there is no residual food in the stomach the next day. This fast is kept strictly on the Ekadashi day and it is broke on the next day after sunrise only. In this fast devotees restrict themselves from consuming grains and cereals.
With this there is an option to choose for the devotees, that they can fast with water, without water, with only fruits, with one time latex food according to their will and capacity of the body. However, it should be decided well before the fast. This fast is advised that family should observe fasting on the first two days only. Ekadashi fasting on both days is suggested for staunch devotees who seek for love and affection of Lord Vishnu.