This day formerly observed the birthday of Emperor Hirohito of Japan (1901-1989), who was the world’s longest ruling monarch. Today this day is celebrated as Greenery Day (Midori-no-Hi) with parades featuring elaborate floats, paper lanterns, traditional Japanese costumes, and fireworks. People also mark the day by planting trees and with other activities centered around the appreciation of nature. Greenery Day is a part of Golden Week, which also includes Japan Constitution Memorial Day (May 3) and Kodomo-no-Hi (Children’s Day, May 5). Discuss
Source: The Free Dictionary