Aadi Chevvai, or Sevvai, is the Tuesdays in the Tamil Month Aadi and it is considered highly auspicious for the worship of Goddess Shakti. The month is considered inauspicious by many Hindus as the Dakshinayana begins in this month. But the month is also of great significance to Shakti worshippers. Fridays (Aadi Velli) and Tuesdays (Aadi Chevvai) are considered highly auspicious and women in large numbers visits shrines dedicated to Amman, Durga, Parvati, Shakti and other Goddesses.
In South India, Tuesday and Friday is dedicated to Shakti worship in many places. It becomes even more auspicious in Tamil Nadu during the month of Aadi.
Unmarried women visit shrines of Shakti (female goddess) on Aadi Chevvai day in the month make different vows. Some women observe partial or full fast on the day. It is widely believed that worshipping of any form of Goddess Shakti in Aadi month will help unmarried women find ideal husbands or life partners.
Special dishes like the Thalagam Kuzhambu, a variation of popular Sambar dish, is prepared in many Tamil houses on Tuesdays in the month.