17 May 2011, Tuesday (today), is Purnima or Full Moon day in Hinduism. It is Vaishakh Purnima and also celebrated as Kurma Jayanti, Buddha Jayanti, and Annamacharya Jayanti. Lord Kurma Dev was first appeared on this day. Buddhists celebrated Buddha Jayanti or Vesakha on this day. Purnima begins at 7.41 pm on 16 May and ends at 4.39 pm on 17 May 2011.
Vaishakh Purnima is also celebrated as Annamacharya Jayanthi, birth anniversary of saint poet Annamayya who was the devotee of Tirumala Tirupati Lord Venkateswara swami.