Ekadasi is an auspicious day dedicated to Lord Vishnu on the 11th day of every lunar fortnight in traditional Hindu calendar. On the 11th Day (Ekadashi) of Shukla Paksh in the month of Karthik, the festival of Devuthan Ekadashi is celebrated. lt is also called Prabodini Ekadasi or Hari Bodhini Ekadasi or Uthwana Ekadashi or Kartiki Ekadashi. It is believed that on this day Lord Vishnu had woken up after a rest of four months. Hence, this day marks the end of Chaturmaas.
This day is considered as a very auspicious day and marriages take place on this day all over
Majority of the people perform Tulsi Vivah on the day of Karthik Ekadashi. On this day Tulsi is married to Saaligram.
Bhisma Panchak is also observed on