World Laughter Day is an annual event celebrated on the first Sunday of May to raise awareness about laughter and its many healing benefits. This year the day falls on May 03, 2020. Every year more than 70 countries around the world celebrate World Laughter Day on the first Sunday of May. The World Laughter Day was first celebrated on May 10, 1998, in Mumbai, India. The day was arranged by Dr Madan Kataria, founder of the worldwide Laughter Yoga movement.