Purattasi is the sixth considered very auspicious month of the Tamil calendar, which falls between mid-Sep to mid-Oct every year begins tomorrow.
This month is one of the special months and is dedicated to Lord Venkateswara. The month is named after the star(s) on the Full Moon day – Poorattadhi (Purva Phalguni) or Uttrattadhi (Uttra Phalguni). According to sacred texts, Lord Vishnu descended to the Earth plane in the form of Venkateswara during the month of Purattasi, to preserve the universe at the end of Kali Yuga.
This month will see Brahmotsavam at Tirupati temple. People generally stay away from eating non vegetarian dishes during the month. Special prayers would be done for Perumal. All Saturdays are considered very auspicious. In this whole Purattasi month, Lord Venkatachalapathy is worshipped with fasting in Saturdays as it is a favourite day for the Lord