Purnima in January 2013 is Poush Purnima (Full Moon in Poush month) in Hindu calendar. Purnima January 2013 date is January 27, Sunday.
It is also known as Shakambari Purnima or Shakambari Jayanti. Magh Snan begins on Poush Pournima day in North India. Pushyabhishek Yatra is one of the popular rituals performed on this Purnima in Sri Krishna temples all around the world (ISKCON temples).
Purnima in January 2013 is also celebrated as Thai Pournami in Tamil Nadu.
On this day, Poush Navratri or Shakambari Navratri culminates in Shakambari temples all around India. Banashankari Navratri festival is held at Badami Banashankari Temple in Karnataka from Banadashtami to Pousha Purnima.
Poush Purnima marks the end of Poush month in North India and on the next day Magh month starts.
In 2013, Maha Kumbh Mela begins with Poush Purnima Snan. It is celebrated in Allahabad Prayaga Sangam.