Gautama Buddha Buddha s Birthday is called Buddha Purnima in Nepal, Bangladesh, and India as he is believed to have been born on a full moon day Various sources hold that the Buddha s mother died at his birth, a few days or seven days later. Buddha Biography Facts Britannica Sep , The Buddha was the founder of Buddhism, one of the major religions and philosophical systems of southern and eastern Asia and of the world. Buddha Quotes, Teachings Facts Biography Sep , Buddha, born with the name Sid