7th January is Vaikunta Ekadasi celebrated by Hindus all over the world.
Lakhs of people visit Venkateshwara temple(Perumal), Lakshmi Narasimhaswamy temple, Ranganathar temple and many more. Temples are opened early morning on this day. It is very popular in Tirupathi and Srirangam. People wait for long hours and all the temples are crowded. Many of them fast on this day.
The belief says "Doors of Heaven (Swarga Vaasal) will open"