Aadi month is a special month in Tamil Calender . All the fridays in this month,Aadi Velli's, are very auspicious and special for Goddess Sakthi/Amman . People will offer porridge/koozh in all the amman temples on all fridays . Aadi pooram , day which comes with star sign 'Pooram' is also very special . Aadi perukku or Aadi Monsoon Festival of Tamilnadu is celebration done on the banks of river for rain god to have more rain and surplus water all through the year for flourishment . This is celebrated on the 18th day of the aadi month .
During the day , we wear new clothes and offer neivedhyam which includes Variety rice (Lemon rice/Curd Rice/Thenkkai sadam/Puli sadam ) , Payasam and Vadai .