Bhishma Dwadashi or Bheeshma Dvadasi is observed on Magha Shukla Dwadashi, the day after Bhishma Ekadashi. In 2017, Bhishma Dwadashi date is February 8.
Bhishma Dwadashi is an auspicious day during when devotees break their Bhishma Ekadasi vrat upvaas. It is believed that Pandvas observed the final rituals and rites for Bhishma pithamaha who died on Bhishma Ashtami (Magh Shukla Ashtami).
Bhishma Dwadasi is the second auspicious day during Bhishma Panchak Vrat, observed from Bhishma Ekadashi to Magh Purnima. It is not only observed by Vishnu devotees but also by Shiva devotees.
This festival is a grand occasion in ISKCON Temples, Vrindavan Krishna Temple, Banke Bihariji Temple and Lord Puri Jagannath Temple.
In 2016, Bhishma Dwadashi date was February 19.
In 2015, Bhishma Dwadashi date was January 31.
In 2014, Bhishma Dwadashi date was February 11.
In 2013, Bhishma Dwadashi date was February 22.
Bhishma Dwadashi 2012 date was February 4.