3 May 1947 (current constitution adopted as amendment to Meiji Constitution); notable earlier dates: 660 B.C. (traditional date of the founding of the nation by Emperor JIMMU); 29 November 1890 (Meiji Constitution provides for constitutional monarchy)
National holiday:
Birthday of Emperor AKIHITO, 23 December (1933)
Constitution:
3 May 1947
Legal system:
modeled after European civil law systems with English-American influence; judicial review of legislative acts in the Supreme Court; accepts compulsory ICJ jurisdiction with reservations
Suffrage:
20 years of age; universal
Executive branch: