Kartik Purnima (Tripuri Poornima, Tripurari Purnima) is the Full Moon and auspicious day in Kartik month. In 2017, Kartik Purnima date is November 4.
Kartik Purnima day marks the end of Kartik month as per the calendars of North India but in other calendars it is the 15th day in Kartik maas. During Kartik Purnima, Dev Diwali, Deepotsavam and Ganga Mahotsav are observed.
On Kartik Purnima, some people perform Tulsi Vishnu Vivah. It is observed on some other days – Bhodini Ekadasi or on Ksheerabdi Dwadashi. Kartik Poornima celebrations are associated with the legend of demon Tarakasur. Tarakasur was demolished by Lord kartik, also known as Skanda or Kumara.
Another legend associated with Kartik Poornima is of Lord Vishnu’s Matsyavatar. It is believed that on this day, Vishnu was incarnated in Matsya incarnation and protected Manu, the first man, from Maha Pralay (deluge).