Aavani is the 5th month of the Tamil Calendar. According to the Gregorian calendar, it falls between mid-August and mid-September. The birth of Lord Krishna , celebrated as Ashtami Rohini, and Ganesh Chaturthi, dedicated to Lord Ganesh, are the main festivals this month. Aavani Avittam, also called Raksha Bandhan is another significant celebration during the month of Aavani.