The paragraph below comes from a link at the History Channel’s website.
On this day, Buddhists celebrate the commemoration of the birth of Gautama Buddha, the founder of Buddhism, thought to have lived in India from 563 B.C. to 483 B.C. Actually, the Buddhist tradition that celebrates his birthday on April 8 originally placed his birth in the 11th century B.C., and it was not until the modern era that scholars determined that he was more likely born in the sixth century B.C., and possibly in May rather than April.
Yesterday PBS aired a documentary on the life of the Buddha and his teachings. I have been enjoying it immensely on YouTube. Below is the 1st of 19 parts TheBuddhaPBS youtube channel has posted.