Since 1940 (Shōwa 15) marked the 2600th year since the accession of
Emperor Jimmu (according to
Meiji period calculations based on the
Nihon Shoki, the accession date was February 11,
660 BC), the
Japanese government established the "2600th Anniversary Celebration Preparatory Committee" on October 1, 1935 (Shōwa 10), with the then Prime Minister
Keisuke Okada (
Okada Cabinet) as its chairman. This committee planned and promoted commemorative events, including the development of
Kashihara Shrine and imperial mausoleums. This preparatory committee was abolished after the establishment of the "2600th Anniversary Celebration Deliberative Council" with Yoshirō Sakata as chairman. Furthermore, Ichisuke Iinuma was appointed as the head of the "Cabinet 2600th Anniversary Celebration Office" established within the
Cabinet, and later Chikakatsu Utada assumed the position. On April 24, 1937 (Shōwa 12), the founding committee of the "2600th Anniversary Celebration Association" (奉祝会,
Hōshukukai) was held at the
Prime Minister's Official Residence, where its rules were decided. On July 1 of the same year, the "Regulations for the Establishment and Supervision of the 2600th Anniversary Celebration Association" (Cabinet Order No. 3 of 1937) were promulgated, and on July 7, the incorporated foundation "2600th Anniversary Celebration Association" was established (Patron: Prince Yasuhito of Chichibu; Acting Patron: Prince Nobuhito of Takamatsu; Vice-Patron: Prime Minister and Duke
Fumimaro Konoe; President: 16th Head of the
Tokugawa Main Family, Duke
Iesato Tokugawa; Vice-president: Marquis Yukitada Sasaki).--> Furthermore, on November 9 of the same year, the
Home Ministry's
Shrine Bureau was elevated to become the
Institute of Divinities (神祇院,
Jingiin), established as an external bureau of the Home Ministry, and in research and education,
Jingū Kōgakukan was upgraded from an old-system specialized school to an old-system university. On July 15, 1940 (Shōwa 15), amid increasing criticism from the international community over the
Second Sino-Japanese War and prioritizing war expenditures and securing soldiers domestically, the
Mitsumasa Yonai cabinet formally decided at a cabinet meeting to return the hosting rights for the
1940 Summer Tokyo Olympics and to postpone the 2600th Anniversary Commemorative International Exposition (the hosting rights for the
1940 Sapporo Winter Olympics had been returned on July 16, 1938). From June 9–14, 1940 (Shōwa 15), the
Shōwa Emperor made an imperial journey (行幸,
gyokō) to the Kansai region to report the holding of the 2600th Anniversary Celebrations. He personally worshipped at Toyouke Daijingū,
Kōtai Jingū, Emperor Jimmu's Unebiyama Northeast Mausoleum, Kashihara Shrine, Emperor Ninkō's Gotsukuri no Misasagi, Emperor Kōmei's Gotsukuri no Higashiyama Mausoleum, Empress Dowager Eishō's Gotsukuri no Northeast Mausoleum, Emperor Meiji's Fushimi Momoyama Mausoleum, and Empress Shōken's Fushimi Momoyama East Mausoleum. After returning to the capital, he worshipped at Emperor Taishō's Tama Mausoleum. On November 10, 1940 (Shōwa 15), the cabinet-sponsored
"2600th Anniversary Ceremony" (紀元二千六百年式典,
Kigen Nisen Roppyaku-nen Shikiten) was grandly held at the Plaza in front of the Imperial Palace with the Shōwa Emperor and
Empress Kōjun in attendance. Related events continued until November 14, and public celebratory mood reached its peak. Additionally, to coincide with the ceremony, five composers from Germany, Britain, Italy, France, and Hungary composed the "Celebratory Music for the 2600th Year of the Imperial Era". However, reflecting material shortages due to the prolonged war, hospitality for official event participants was simplified. Furthermore, as indicated by the slogan "The Celebration is Over, Now Let's Work!" (祝ひ 終つた さあ働かう!,
Iwai Owatta Saa Hatarakō!) written on
Taisei Yokusankai posters put up all at once after the events ended, this marked a turning point towards renewed austerity, after which the wartime life of the people became increasingly harsh. Lets celebrate energetically and cheerfully.JPG|Poster until November 14: "Celebrate! Energetically and Cheerfully" The festival ended Lets work.JPG|Poster from November 15: "The Celebration is Over, Now Let's Work!" == 2600th Anniversary Ceremony ==