The present Constitution of Japan was officially made public in 1946. Two years later, the date was made into a holiday to uphold the ideals of the Constitution – the love of peace and freedom, through cultural activities.
However, the Constitution was only enforced on May 3, 1947. Hence the Constitution Memorial Day marked that event.
This holiday is celebrated annually on November 3 and aims to promote arts and different fields of academic endeavor. This is also the time the Order of Culture Awards is held. The Emperor himself presents the awards to the winners who have made outstanding contributions to arts, sciences and culture.
Many other festivals are held all over the country for the development of arts and various awards are presented by both public and private organizations.
For Further Information about Japan’s Public Holidays >> http://tokyo.angloinfo.com/information/moving/country-file/public-holidays/