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Constitution Memorial Day

Guide to the date, history, cultural origins and celebration traditions of Constitution Memorial Day in Japan.

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History & Origins of Constitution Memorial Day

Constitution Memorial Day (Kenpō Kinenbi) in Japan, celebrated on May 3rd, is a major part of Golden Week. Historically, it commemorates the enforcement of the 1947 Constitution of Japan, which established the country's post-WWII democratic governance, popular sovereignty, fundamental human rights, and a pacifist foreign policy.

How It Is Observed & Celebrated

Marked by public lectures on democracy, special tours of the National Diet Building in Tokyo, and family outings to parks during the spring holiday season.

Quick Facts Card

Country: Japan
Holiday Name: Constitution Memorial Day
Date (2026): May 06
Day (2026): Wednesday
Observance Type: Statutory
Observed In: National (Japan)
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Date Reference Matrix (3-Year Range)

Year Calendar Date Day of the Week Status
2025 May 03, 2025 Saturday Official Statutory Day Off
2026 May 06, 2026 Current Year Wednesday Official Statutory Day Off
2027 May 03, 2027 Monday Official Statutory Day Off