The annual Navratri Brahmotsavam celebrations 2012 in Tirumala Tirupati Balaji temple will begin on October 15, 2012 and end on October 23, 2012. During the nine-days of the Brahmotsavams, Sri Venkateswara will be taken in procession around the temple in different Vahanas (special decorated Vehicles based on Vishnu legends). There will be special Unjal Seva during the period.
September 15, 2012 – Dwarjarahanam (Morning) Pedda Sesha Vahanam (Evening)
September 16, 2012 – Chinna Sesha Vahanam (Morning) Hamsa Vahanam (Evening)
October 17, 2012 – Simha Vahanam (Morning) Muthyapu Pandiri Vahanam (Evening)
October 18, 2012 – Kalpa Vruksha Vahanam (Morning) Sarva Bhoopala Vahanam (Evening)
October 19, 2012 – Mohini Avatharam (Morning) Garuda Vahanam (Evening)
October 20, 2012 – Hanumantha Vahanam and Swarna Ratham (Morning) Gaja Vahanam (Evening)
October 21, 2012 – Surya Prabha Vahanam (Morning) Chandra Prabha Vahanam (Evening)
October 22, 2012 – Rathostavam (Morning) Aswa Vahanam (Evening)
October 23, 2012 – Chakra Snanam (Morning) Dwaja Avarohanam (Evening)
More information about various Vahanas during Navratri Brahmotsavam can be found in this earlier article.