The annual Navratri Brahmotsavam celebrations 2013 in Tirumala Tirupati Balaji temple will begin on October 4, 2013 and end on October 13, 2013. 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.
October 5, 2013 – Dwarjarahanam (Morning) Pedda Sesha Vahanam (Evening)
October 6, 2013 – Chinna Sesha Vahanam (Morning) Hamsa Vahanam (Evening)
October 7, 2013 – Simha Vahanam (Morning) Muthyapu Pandiri Vahanam (Evening)
October 8, 2013 – Kalpa Vruksha Vahanam (Morning) Sarva Bhoopala Vahanam (Evening)
October 9, 2013 – Mohini Avatharam (Morning) Garuda Vahanam (Evening)
October 10, 2013 – Hanumantha Vahanam and Swarna Ratham (Morning) Gaja Vahanam (Evening)
October 11, 2013 – Surya Prabha Vahanam (Morning) Chandra Prabha Vahanam (Evening)
October 12, 2013 – Rathostavam (Morning) Aswa Vahanam (Evening)
October 13, 2013 – Chakra Snanam (Morning) Dwaja Avarohanam (Evening)
More information about various Vahanas during Navratri Brahmotsavam can be found in this earlier article.