The standing bronze statue of Shaka at Birth at Tōdai-ji in the city of Nara in Japan, along with the lustration basin in which the image stands, are of the type used in the annual celebrations of the Buddha's birth on 8 April. The statue and its basin date to the Nara period (710-794) and have been designated National Treasures.

Buddha's Birthday or Buddha Day is a primarily Buddhist festival that is celebrated in most of South, Southeast and East Asia, commemorating the birth of the prince Siddhartha Gautama, who became the Gautama Buddha and founded Buddhism. According to Buddhist tradition and archaeologists, Gautama Buddha, c. 563-483 BCE, was born at Lumbini in Nepal. Buddha's mother was Queen Maya Devi, who delivered the Buddha while undertaking a journey to her native home, and his father was King Śuddhodana. The Mayadevi Temple, its gardens, and an Ashoka Pillar dating from 249 BCE mark the Buddha's birth place at Lumbini.