Mukkoti Dwadasi (Vaikunta Dwadasi) is observed on Shukla Paksha Dwadasi in Dhanurmasam, the following day of Vaikunta Ekadasi (Mukkoti Ekadasi). In 2012, Mukkoti Dwadasi date is December 24. There was another Mukkoti Dwadasi in January early this year – January 6, 2012.
Mukkoti Dwadasi is celebrated with utmost fervor in Tirumala Tirupati Temple, Bhadrachalam Sri Rama Temple, and all other Vaishnava Temples. ‘Mukkoti Pradakshinam’ (circumambulation of Garbhagruha) in Tirumala temple is allowed only on this festive occasion.
Mukkoti Dwadasi is considered highly auspicious to perform punya snana in Swami Pushkarini Theertham (Temple tank of Venkateshwara Swamy).