Also known as Devprabodhini Ekadashi, this occurs on Kartik Sud 11.

Origin
After sleeping during 'Chaturmaas' - the 4 holy months - in the ocean of milk - 'Kshirsagar,' the Lord awakens on this day. This awakening is known as 'Prabodh.' His vigil at Bali Raja's doorstep, which began on Devpodhi Ekadashi, ends on this day. He then returns to His abode.

Sentiments
To please the Lord all the more, while He is away guarding Bali Raja's kingdom, devotees observe extra vows during Chaturmaas. This is an opportunity for devotees to behold Parmatma in their Atmas. The Lord graces them for having observed the vows and fasts by manifesting in their hearts. This is known as 'Devprabodh'.

   Ritual

• Devotees celebrate 'Devprabodh' by observing a waterless fast. This is the fifth of the 5 waterless fasts to be observed by Swaminarayan followers during the year, as enjoined by Shastriji Maharaj.
• As in the majority of Hindu Dharma's festivals, this festival is 'celebrated' by curbing the ten indriyas and the mind. And the primary factor governing all the senses is the sense of taste. Therefore in denying the body food and water, all the senses lose interest in their respective material pursuits. The time and energy conserved is diverted to offer bhakti to the Lord, who is thus pleased. This form of self-abnegation prevents the senses from degrading the Jiva and so this Ekadashi forms a step towards 'Devprabodh' - awakening the Lord within.
• Devotees in the Swaminarayan Sampradaya also offer a 'Haatadi' to the Lord in the mandirs. This is similar to Annakut, except here, fresh, raw vegetables are offered and arranged in cane baskets in front of the Lord. The inherent sentiment is that everything is God given and this we offer back to the Lord.
  

• Bhagwan Swaminarayan's father, Dharmadev, was born on this day in Samvat 1796 in the village of Itar, Uttar Pradesh, North India.
• Ramanand Swami gave 'diksha' to Neelkanth in Piplana in Narsinh Mehta's house on Samvat 1857, naming Him, 'Sahajanand Swami' and 'Narayan Muni'.
• One year later in Samvat 1858, on the same day of Kartik Purnima, Ramanand Swami ceremoniously bequeathed his leadership to Sahajanand Swami, appointing Him as Head of the Sampraday. It was then that Bhagwan Swaminarayan offered the matchless prayer, requesting two boons for the devotees from Ramanand Swami (ref. website article on 'The Bicentennial Anniversary of Lord Swaminarayan's Advent in Loj.').
• Shastriji Maharaj gave parshad diksha to 16-year-old Shantilal Motibhai Patel of Chansad, near Vadodara, in Samvat 1996 (1939 CE) at Ambli Vali Pol, in Amdavad. Shantilal is none other than Pramukh Swami Maharaj.