Full moon day in a Hindu lunar month is referred as Purnima. Vrat (fasting) and special pujas are held on the day. Purnima May 2013 date is May 25. The Purnima time is from 11:39 PM on May 24, 2013 and ends at 9:29 PM on May 25. Purnima Vrat is on May 24 – fasting is observed on this day.
May 25 is the Vaishakh Purnima in most Hindu calendars.
Some Hindu communities also observe the day as Kurma Jayanti day. The day is observed as Radha Raman Jayanti in Vrindavan. Certain Shiva sects observe Gorakhnath Jayanti on the day.
In Tamil Calendars, this is the Pournami in Vaigasi Month.
Vaishak Snan ends on the day.
The day is also the last day in the Vaishak month in the traditional Hindu calendar followed in North India.