Kalki Jayanthi is the appearance day of Lord Kalki. Lord Kalki is believed as the tenth incarnation of Lord Sri Maha Vishnu. In 2012, Kalki Jayanthi date is July 24. It is observed on Shukla Paksha Sashti in Shravan Maas. As per Hinduism, Kalki avatar appears at the end of the Kali Yuga.
In South Indian states, Kalki Jayanthi is celebrated in Bhadrapad maas. The festival is observed with much gusto in Vaishnava temples (temples dedicated to Lord Vishnu) such as – Tirupati Sri Venkateshwara temple, Sri Rangam Ranganatha swamy temple, Udupi Sri Krishna temple, Guruvayur Sri Krishna temple, and Bhadrachalam Sita Ramachandraswamy temple.
In 2011, Kalki Jayanti date was August 4.