Dev Uthani Ekadashi is also known as Prabodhini Ekadashi and Devutthana Ekadashi. It is a Hindu festival dedicated to Lord Vishnu. Hindus believed that on this day Lord Vishnu had woken up after four months of Yoga Nidra and with this the Chaturmaas end which is also a period of four months. Some people also believe that on this day Shaligram married to Tulsi, so the day is marked as a very auspicious day for marriages according to Hindu religion.