Every year on the eve of Agathiyar's birthday, which falls during the Ayilyam star of Margazhi Month, the National Institute of Siddha celebrates Siddha Day. On December 23, 2021, the Fifth Siddha Day celebration held in collaboration with the Central Council for Research in Siddha and the Directorate of Indian Medicine and Homeopathy, Government of Tamil Nadu, with the theme "Strength of Siddha Medicine for Communicable Diseases."The Chief Guest, Shri Sarbananda Sonowal, Minister of Ayush, Ports, Shipping and Waterways, Guests of Honor, MoS, for Ayush and WCD Dr. Munjpara Mahendrabhai, Shri. Maa. Subramanian, Minister of Health and Family Welfare Department, Government of Tamil Nadu, graced the auspicious occasion with their distinguished presence.Shri. Pramod Kumar Pathak, Special Secretary, Ministry of AYUSH, Dr. Manoj Nesari, Advisor Ayurveda, and Vaidya Jayant Yeshwant Deopujari, Chairperson National Commission for Indian System of Medicine, Shri. S. Ganesh is the Director of the Tamil Nadu Government's Directorate of Indian Medicine and Homeopathy all presided over the event. The welcoming message was made by Prof. Dr. K. Kanakavalli, Director General, CCRS, and the vote of gratitude was presented by Prof. Dr. R. Meenakumari, Director, NIS.