Purnima is the full moon day in a traditional Hindu calendar and fast and holy bath is performed on the day. In August 2013, the date of Purnima is August 21. The Purnima fasting is marked on August 20. The time of Purnima tithi is from 9:36 AM on August 20 to 7:30 AM on August 21. The Purnima in August 2013 is the Shravan Purnima in most regions. In Tamil Calendar, it is the Aavani Purnima.
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 Shravan month in the traditional Hindu calendar followed in
Auspicious days include – Raksha Bandhan is observed on August 20 in many regions. Some regions will be observing it on August 21. Amarnath Yatra ends on August 21. Nariyali Purnima in
Maharashtra on August 20. Rig and Yajur Upakarma is on August 20. Avani Avittam is on August 20, 2013.