Aani Masam is the third month in a traditional Tamil calendar. In 2015, Aani Month begins on June 16, 2015 and ends on July 16. The most important and auspicious day in the month is the Aani Uthiram (June 24, 2015).
Ekadasi dates in Aani Masam are on June 28 and July 12
Shiva Pradosham dates are on June 29 and July 13.
Sashti Muruga Fasting is on June 22.
Aani Pournami or full moon day is on July 1
Aani Ammavasi is on June 16 and July 14.
Pillayar Sankatahara Chaturthi is on July 5. (Ganesh Sankashti Chaturthi)
The next month in Tamil Calendar is the Aadi Month.