Balaji, also known as Venkatachalapathi and Srinivasa, is a form of the Hindu god Vishnu. Venkateshwara is the Lord who destroys the sins of the people. According the Hindu scriptures, Vishnu, out of love towards his devotees, incarnated as Venkateshwara and appeared for the salvation and upliftment of humanity in this Kali Yuga and is considered the supreme form of Vishnu in this age.
For worshippers, the deity Venkateswara symbolises goodness. With his conch, he creates the cosmic sound from which the creation has manifested.
And, with his disc, he destroys ignorance and ego in the beings, thus liberating them. Lord Venkateswara is believed to be a very merciful deity form of Vishnu, being the fulfiller of every wish made to him by the devotees.
Sri Venkateswara Suprabhatam is recited during the early hours Brahma Muhurta every morning to wake up the Lord from his yogic sleep. It is believed that Lord Venkateswara will bestow prosperity this time. The worship of Lord Venkateswara during Suprabhatam is considered highly blissful Lord Venkateswara, popularly known as Balaji, is the presiding deity of the Thirumala Hills in Andhra Pradesh.
Saturdays, or Shani kilamai, in the Tamil Month Purattashi is considered highly auspicious for propitiating and worshipping Lord Venkateswara, Lord Shani and Navagrahas. It is believed that Lord Balaji will help those devotees observing Purattashi worship and fasting overcome difficulties created by Shani Bhagvan. It is believed that Lord Vishnu appeared as Lord Balaji in Purattashi month and He returned to Vaikunata in the same month. There is also a popular belief that Shani Bhagavan loses his powers in Purattashi and therefore he cannot create any trouble.