The tamil month Aadi is a the fourth month of the tamil calender year and considered as one among the sacred months of the year because the Dakshinayana Punniyakalam begins at the time. Aadi month has a period from the mid of july to mid of August month of English calender.
Aadi Pirappu or Dakshinya Puniyakalam
The beginning of the month Aadi is celebrated as Aadi Pandigai and called as "Aadi Pirappu". Aadi Pirappu is an important festival for the newly married couples.Dakshinya Puniyakalam, the night of devas begins on this day. And some communities of people perform Tarpanam on that day which means they give Thithi to their ancestors. During this period sun changes its direction.
The new moon day falling in the month of Aadi is celebrated as Aadi Pooram. The day is considered as the birthday of Andal. She is a poetess who wrote Tirupaavai and she married the Lord Balaji too. Women take part in several ritual ceremonies during this month.
Varalakshmi pooja is an important pooja performed by women during this month. It is celebrated on the friday before the full moon day,falling in the same month. Here Lordess Varalakshmi who is considered as yet another part of Lakshmi, who is a consort of Vishnu.During this period, women will observe fasting for the wellbeing of their family.
Aadi Perukku is celebrated on the 18th day of Aadi month at the basis of Kaveri basin in Trichy and Tanjavur, which is considered as the holy river of southern India. Aadi Perukku is also known as Pathinettam Perukku is denoted as one of the important festival in Tamilnadu. Mulaipari, the sprouting or germination of seeds of Nine grains known as Navathaniyam is an important ritual activity taking place at this time. The other means of paying owation to the goddess is through Kummipatu. These are done so that, the goddess will make their land fertile for all the period with good amount of rainfall.
Auspicious Days of Aadi Month in 2012
1)Aadi Chevvai - The tuesdays in the month of Aadi
2)Aadi Velli - Fridays in the Aadi month
3)Aadi Amavasai - No moon day July 18,2012
4)Aadi Pooram - This day is dedicated to Lordess Andal. This falls on July 23,2012
5)Varalakshmi Pooja - Holy day for Goddess Laksmi. July 27,2012
6)Aadi Perukku - This year it falls on August 3,2012
7)Aadi Karthigai - Day dedicated to Lord Muruga. July 10,2012
Aadi Karthigai, I believe is Aug 10th, not July 10th as indicated in this article.