30 December 2017 is Mukkoti Dwadashi, Vaikunta Dwadashi. It falls on Shukla Paksha Dwadashi in Dhanurmasam, Margali masam in Tamil calendar. 9 January 2017 was also celebrated as Mukkoti Dwadashi.
Mukkoti Dwadashi is celebrated with utmost fervor in Tirumala Tirupati Balaji Temple and Bhadrachalam Sri Rama Temple in Andhra Pradesh.
Mukkoti Pradakshinam, a ritualistic circumambulation of Tirumala Garbhagriha, is the major tradition followed in TTD Temple.
Devotees perform Mukkoti Pradakshinam after performing Punya Snanam at Mukkoti Theertham (Swami Pushkarini Tirtham) near the Temple.