Avani Masam is the fifth month in a year in a traditional Tamil calendar. In 2026, Avani Masam begins on August 18 and ends on September 17. The most important festival in the month is Sri Krishna Jayanti on September 4. Avani Moolam is on August 23.
Ekadasi dates in Avani Masam are on August 23 and September 7
Shiva Pradosham dates are on August 25 and September 8
Pillayar Sankatahara Chaturthi is on August 31 (Ganesh Sankashti Chaturthi)
Aavani Amavasya is on September 11
Muruga Sashti Fasting is on August 18 and September 17
Aavani Pournami or full moon day is on August 28, 2026
Avani Avittam - August 27
Gayatri Japam - August 28