Chinmaya Aradhana Day is observed on August 3rd, marking the Mahasamadhi of Gurudev Swami Chinmayananda, the founder of the Chinmaya Mission.  This day is also known as Sadhana Day within the mission, dedicated to intensifying spiritual practice and paying tribute to his teachings of Vedanta.  Observances typically include Paduka Puja, Vedic chanting, and devotional programs.