PolitikHukum & traktatBudayaAntariksa
- 1947Kemerdekaan3 May 1947 (current constitution adopted as amendment to Meiji Constitution); notable earlier dates: 11 February 660 B.C. (mythological date of Emperor JIMMU founding the nation); 29 November 1890 (Meiji Constitution provides for constitutional monarchy)CIA World Factbook
- 1970Objek antariksa pertama yang diluncurkanOhsumiGCAT
- 1979Meratifikasi ICCPR (hak sipil & politik)UN Treaty Collection
- 1985Meratifikasi CEDAW (hak perempuan)UN Treaty Collection
- 1993Situs Warisan Dunia UNESCO pertamaBuddhist Monuments in the Horyu-ji AreaUNESCO World Heritage
- 1994Meratifikasi Konvensi Hak AnakUN Treaty Collection
- 2007Bergabung dengan ICC (Statuta Roma)UN Treaty Collection
- 2016Meratifikasi Perjanjian Iklim ParisUN Treaty Collection
- 2024Penetapan Warisan Dunia terakhirSado Island Gold MinesUNESCO World Heritage
- 2026Pemilu legislatif terakhir2026-02-08IPU Parline
- 2026Peluncuran antariksa terakhirGCAT
