There are 3 events going on, amidst some mutterings and mumblings from the priests
• Chithirai Thiruvonam, Natarajar Abhishekam – along with Naalvar, Pulikaal Muni and Patanjali. One of 6 annual such events, the most important being Arudra Darshanam
• Theipirai Ashtami, Bhairavar abhishekam
• Thiruvona Deepam or Shravana Deepam – Thiruvonam is Venkateswara’s birth star. There is a small kalasa puja, followed by the lighting of a large ghee lamp and doing one pradakshina around the temple.
Thiruvonam notes:
• Chithirai Thiruvonam marks the birth star (Thiruvonam/Shravana nakshatra) of Lord Vishnu falling in the first month of the Tamil solar calendar
• Shravana/Aavani Thiruvonam is Vamana Jayanti (ONAM)
• Purattasi Thiruvonam is profoundly special for Lord Perumal because it marks the day the Lord manifested on Earth as Lord Venkateswara (Srinivasa) at the Tirumala hills to protect humanity during the Kali Yuga (It’s the last day of the Desikar Utsavam at the big Perumal temple, and day we end up at Thiruvahindrapuram).