Purattasi Sani, Saturdays in Purattasi Masam are the highly auspicious vritham followed in the month (September – October). In 2017, Purattasi Sani dates are – September 22, September 29, October 6, October 13.
As Adi Fridays are dedicated to Goddess Shakti, Purattasi Sani days are dedicated to Lord Balaji.
Venkateshwara Vratham (Balaji Vritham) is observed on Purattasi Sani in Tamil Nadu. Devotees believe that Lord Balaji would expect his devotees to come closer to his hills – Tirumala Tirupati Venkateshwara Swamy Temple.
They also believe for those who cannot able to have darshan of Lord Venkateshwara of Tirumala, he himself beams through the light of Mavilakku.
Venkateshwara Suprabhatham in the morning, Govinda Namalu, Venkateshwara Sahasranama stotram, and Venkateshwara Ashtakam are the famous prayers chanted during Purattasi Sani Vritham.