Aadi Amavasai" refers to the new moon day (Amavasai) that falls during the Tamil month of Aadi. Aadi is the fourth month in the Tamil calendar and usually spans from mid-July to mid-August in the Gregorian calendar. Aadi Amavasai is considered a significant day in the Tamil culture, and it holds religious and spiritual importance. During Aadi Amavasai, many people, especially in South India, perform rituals and ceremonies to honor their ancestors. It is believed that offering prayers, performing rituals, and making offerings on this day can bring peace to the souls of departed ancestors and help in their spiritual journey.