It is celebrated during the Tamil month of Purattasi, which generally falls in the months of September and October of the English calendar. Puratasi Masam is of great importance as it is believed that Lord Venkateswara appeared on the earth in this month. Lord Vishnu devotees consider this as the ideal month for thanking Lord Vishnu for preserving the Universe at the end of Kali Yuga. All the Saturdays of this month are treated as holy days and Devotees gather in large number at Lord Vishnu temples and special prayers are offered.
