Purnima is the full moon day in a traditional Hindu calendar and fast is observed on the day. In November 2013, the date of Purnima is November 17. The Purnima fasting is marked on November 17. The time is from 6:53 PM on November 16 to 7:25 PM on November 17. The Purnima in November 2013 is the Kartik Purnima in most regions. In Tamil Calendar, it is the Aani Purnima.
Tripurari Purnima is observed on the day. Tulsi Puja final day rituals end on the day. Dev Diwali is observed on the day in many regions. Bhishma Panchak Vrat ends on Kartik Purnima day
Some Hindu communities observe fast on Purnima day. Special pujas and rituals are performed in many temples.
The day is also the last day in the Kartik month in the traditional Hindu calendar followed in North India.