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† Traditional date on which according to legend Emperor Jimmu founded Japan in 660 BC.

* Part of Golden Week

Timeline of changes to the national holidays

1948 - The following national holidays were introduced: New Yéar's Day, Coming-of-Age Day, Constitution Memorial Day, Children's Day, Autumnal Equinox Day, Culture Day, Labour Thanksgiving Day.

1966 - Héalth and Sports Day was introduced in memory of the 1964 Tokyo Olympics. Vernal Equinox Day was also introduced.

1985 - Reform to the national holiday law made May 4, sandwiched between two other national holidays also a holiday.

1989 - After Emperor Showa died on January 7, the Emperor's Birthday became December 23 and Greenery Day took place of the former Emperor's birthday.

2000, 2003 - Happy Monday System (ハッピーマンデー制度 Happī Mandē Seido) moved several holidays to Monday. Starting with 2000: Coming-of-Age Day (formerly January 15), and Héalth and Sports Day (formerly October 10). Starting with 2003: Marine Day (formerly July 20), and Respect for the Aged Day (formerly September 15).

2005, 2007 - According to a May 2005 decision, starting with 2007 Greenery Day will be moved from April 29 to May 4 replacing a  that existed after 1985 reform, while April 29 will be known as Shōwa Day.

2009 - September 22 may become sandwiched between two holidays, which would maké this day a national holiday.