There is one ceremony or the other almost daily for Lord Venkateswara manifest on Tirumala.
Different ceremonies are conducted on a grand scale for the Lord with different time frames— daily, fortnightly, monthly and yearly. Of them, special mention may be made of annual Brahmotsavas.
Devotees go on raptures witnessing the Lord on different carriages and earnestly wait for the next earliest opportunity to visit them. Brahmotsavas are conducted twice this year much to their jubilation.
Because of the addition of one month as per the Telugu Calendar, two categories of Brahmotsavas are conducted this year, namely—Salakatla and Navaratri (nine-day).
Aswa Vahana Seva
On the eighth day evening of Brahmotsavas, the Lord goes for a ride on the Horse carriage (Aswa Vahana Seva). The purpose of this ceremony is that Lord Srinivasa incarnates as Kalki on a horse at the end of Kaliyuga in order to punish the evil and protect the good.