Aviation Day

What Is Aviation Day?

Every September 20th is "Aviation Day" (空の日, Sora no Hi) in Japan. On September 20, 1911, a Japanese military airman — accounts vary between the Yoshitoshi Tokugawa and Kumazo Hino flights — made what is considered Japan's significant early powered aviation achievement. Aviation Day was originally established on this date and later formalized through government designation to celebrate the anniversary of Japanese aviation history and to promote public interest in aviation and aerospace technology.

Japan's Early Aviation History

Japanese powered aviation began in December 1910 (see December 19th, Japan's First Flight Day), when army officers flew at Yoyogi Parade Ground. The September 20, 1911 date associated with Aviation Day commemorates subsequent developments in Japan's early aviation program — the establishment of military aviation units and the growing demonstration that Japan could develop and operate aircraft. Japan's aviation development in the following decades was rapid: from experimental flights in 1910-1911, Japan developed a sophisticated military aviation capability that was among the world's most advanced by the 1930s and 1940s.

Japan's Aerospace Today

Modern Japan has significant aerospace capabilities — both in commercial aviation (as a major market for Boeing and Airbus, and as a partner in aircraft component manufacturing) and in space technology (JAXA's launcher programs, Earth observation satellites, and deep-space exploration missions). Aviation Day is observed with airshows, airport open days, and aerospace education events that highlight Japan's continuing engagement with the technologies of flight.

Airport Week

Aviation Day falls during "Airport Week" (空の旬間, Sora no Junkan, September 20-30) — a period when Japan's major airports hold open events, aircraft exhibitions, and educational programs to promote aviation safety awareness and public appreciation of air transportation. Japan's major airports — Narita, Haneda, Kansai, and Chubu — participate with behind-the-scenes tours and special visitor programs.

Fun Facts

• Blue Impulse: The Japan Air Self-Defense Force's aerobatic display team "Blue Impulse" (ブルーインパルス) performs at major aviation events across Japan, drawing large crowds with their precision formation flying. Blue Impulse famously drew the Olympic rings in the sky over Tokyo in both 1964 and 2021.
• Aircraft manufacturing: Japan manufactures significant proportions of the structural components of Boeing aircraft — contributing to the global aviation supply chain while maintaining domestic aerospace engineering capabilities.