As part of the auspicious Dhanurmasam celebrations, TTD will organise Thiruppavai Pravachanas at 233 centres across the country from December 16 to January 14. The inaugural Tiruppavai Pravachana will be held tomorrow at Annamacharya Kalamandiram in Tirupati. The programme is being conducted under the auspices of the TTD Alwar Divya Prabandha Project.