Greenery Day in Japan honors nature, the environment and the appreciation of living things. Originally observed on April 29 to commemorate Emperor Shōwa's love of nature, it was moved to May 4 in 2007. On this day, people visit parks, gardens and forests, enjoying outdoor activities and reflecting on the importance of environmental preservation and harmony with nature.

When is Greenery Day?

Greenery Day in Japan is observed on May 04 each year.

The following is the list of Greenery Day from 2020 to 2049.

The History of Greenery Day?

Greenery Day is a national holiday in Japan dedicated to the appreciation of nature and the environment. Its origins are closely tied to Emperor Shōwa (Hirohito) and Japan's postwar history.

Originally, April 29 was celebrated as Emperor Shōwa's Birthday during his reign (1926–1989). After his death, the day was renamed Greenery Day in 1989, to honor the late emperor's deep love of nature, particularly his interest in botany and marine biology, without directly referencing his wartime legacy. The intent was to retain the holiday while shifting its focus toward environmental appreciation and peace.

In 2007, Greenery Day was officially moved to May 4, as part of the reorganization of Japan's Golden Week holidays. April 29 was renamed Shōwa Day, allowing people to reflect on the turbulent yet transformative Shōwa era.

Today, Greenery Day encourages people to spend time outdoors, plant trees, and cherish Japan's natural beauty. It also symbolizes the nation's ongoing respect for environmental harmony and sustainable living, aligning with Japan's cultural reverence for nature found in Shinto and Buddhist traditions.