Shakambari Purnima is observed on Paush Purnima, the Full Moon day in Poush month. In 2018, Shakambari Purnima date is January 2.
It is mainly observed in states like Rajasthan, Maharashtra and Uttar Pradesh and Karnataka where Paush Navratri or Shakambari Navaratri is celebrated. At Badami Banashankari Temple in Karnataka, Nagewadi, Maharashtra, Kumbhoj near Satara, Sharanpur in Uttar Pradesh and Sambhar in Rajasthan, Shakambari Purnima is celebrated with lot of gusto.
In Badami temple, Shakambari Devi is worshipped in the form of Banashankari Devi. Banadashtami or Banada Ashtami is the major festival celebrated in Badami temple during Banashankari Navaratri.
Shakambari Navratri or Paush Navaratri begins on Paush Ashtami and ends on Paush Purnima day which is also called as Shakambari Poornima.