"Kartik Purnima" also known as Tripuri Purnima and Tripuri Purnima.

The Purnima on the day of Shukla Paksha in the Kartik month is known as Kartik Purnima. Kartik Purnima is also known as Tripuri Purnima and Ganga Snan. Kartik Poornima will be observed on Wednesday, 25th November 2015. 

Lord Mahadev killed a demon named Tripuri on this day and hence, it is known as Tripuri Purnima. Kartik Purnima has immense religious value according to the Hindu mythology. 

There is a tradition of taking a bath in Ganga and donating lamps on this day. It is believed that Kartik Purnima provides Dharma, Artha, Kama and Salvation. 

Kartik Purnima is considered as an auspicious day according to Hindu mythology. It is considered to be day of Lord Shiva, Lord Brahma, Lord Vishnu, Lord Angira and Lord Sun. 

A person involving in baths, charity, donation etc on this day receives fruitful results. 

Shri Satyanarayana story is read on this day and lamps are lit on intersections, under Peepal trees, in temples etc. Prayers offered on each Purnima beginning from Kartik Purnima give positive results.

Importance of Kartik Purnima worship. This festival celebrates all people and wears new Sarees, Kurta and Dhoti. 

It is believed that charities on this day are equal to a hundred Ashvamedh Yagyas. It is also believed that charities, donations etc in this month help in attaining salvation. 

All these things keep great importance on this auspicious day. Donations, charities etc. on this day, help in getting closer to Lord Shiva and keeps a person healthy and content. 

Kartik Purnima is one of the most important Purnima of the year.