Sashti vritham is an auspicious puja dedicated to Lord Muruga. Sashti Viratham in August 2012 date is August 23, Thursday. It falls in Avani Masam as per Tamil calendar. In Malayalam calendar, this Shashti vratham falls in Chingam Month.
In Andhra Pradesh, Karnataka, Maharashtra, Gujarat, and other North Indian calendars and in Nepali calendar, Sashti Viratham of August 2012 falls in Adhik Bhadrapad Maas.
The other Sashti in August 2012 is 8 August, Wednesday. It falls in Aadi masam in Tamil calendar.