Prabodhini Ekadashi (Sanskrit: प्रबोधिनी एकादशी, romanized: Prabodhinī Ekādaśī), also known as Deva Uttana Ekadashi (Sanskrit: देव उत्तान एकादशी, romanized: Deva Uttāna Ekādaśī), is the 11th lunar day (ekadashi) in the bright fortnight (Shukla Paksha) of the Hindu month of Kartika. It marks the end of the four-month period of Chaturmasya, when the god Vishnu is believed to be asleep. It is believed that Vishnu sleeps on the day of Shayani Ekadashi, and wakes on this day.
The end of Chaturmasya, when marriages are prohibited, signifies the beginning of the Hindu wedding season. Prabodhini Ekadashi is followed by Kartika Purnima, which day is celebrated as Deva Deepavali, the Deepavali of the devas.