Pooranmashi, Pournami september 2012, Poornima Date 30th September 2012, Purnima date
According to Hindu lunar calender, Full moon day is known as Purnima or Pournami. Fasting observed on this day as Purnima Vrat. Purnima Vratham is observed from sunrise to till sighting of the moon.
In September 2012, the date of purnima is 30th. Since this falls on hindu month of badrapada, it is called as Badrapada Purnima. Umamaheshwara Vratham is observed on this day. Also the following day of Bhadrapad Purnima marks the Start of Mahalaya Paksha.