Prabodhini Ekadashi, also known as Bodhini Ekadasi, is observed on Kartik Shukla Ekadashi. In 2016, Prabodhini Ekadashi date is November 11.
It is also called as Dev Utthana Ekadashi. It is believed that on this day, Lord Vishnu wakes up from his Yoga Nidra (cosmic sleep).
Lord Vishnu starts Yoganidra on Ashada Ekadashi (Dev Shayana Ekadashi) and ends on this Dev Utthana Ekadashi. This day also marks the ending of Chaturmas vrat.
Starting from Prabodhini, Kartik Dwadashi, Kartik Tryodashi, Kartik Chaturdashi and Kartik Purnima are considered as most auspicious days to perform any pujas.
Bodhini, Ksheerabdhi Dwadashi and Kartik Purnima are best days to observe Tulsi Vivah, also known as Tulsi Ksheerabdhi Sayana Vrata.
Who performs Ekadashi vrata on Prabodhini would get the result of Ashwamedha Yagam. And who offers food to even a single person after this Ekadasi vrata, would get the merit of performing ‘Annadaan (food charity) to ten million people along the river banks of Ganga on Surya Grahan.
Mantra or prayer to chant on Prabodini Ekadashi