International Buddha Poornima diwas 2016 was celebrated on which date?

Answer: [A] 21st May

Buddha Poornima or Vesak is recognized as the thrice sacred day that marks the birth, enlightenment and parinirvana of Lord Buddha. While Buddha was born in Lumbini in present day Nepal, he attained sambodhiprapti in Bodhgaya in Bihar. In Sarnath, he set in motion the wheel of the Dharma, and finally attained mahaparinirvana in Kushinagar.

This question is a part of GKToday's Integrated IAS General Studies Module