Forming part of Japan’s much-anticipated Golden Week, Constitution Memorial Day (憲法記念日, Kenpou Kinenbi) is an annual holiday held on the 3rd of May, which commemorates the declaration of Japan’s post-war constitution. While most people take this opportunity to take the day off from work or school, what does this holiday mean to Japan as a whole? What is the significance of the Japanese Constitution, and how is the day observed?
In this blog, we’ll talk about the history of Constitution Memorial Day, as well as the importance of Japan’s post-war Constitution and how it transformed Japan into a democracy. We’ll also cover how people celebrate this important holiday, as well as include our recommendations on what to do on Constitution Memorial Day.
What is Constitution Memorial Day?
Constitution Memorial Day is a day to commemorate the adoption of the current Japanese Constitution. It’s a day to reflect on the role of the government in maintaining the rights of its citizens, and to reflect on the importance of peace and democracy in the country. It’s also a time to reflect on Japan’s history leading up to the post-war period as well.
The History of Japan’s Constitution Memorial Day
To understand why Constitution Memorial Day is important in Japan, we have to go back to the events leading up to the declaration of Japan’s post-war Constitution.
Japan’s monarchy is the longest continuous hereditary lineage in the world, yet despite their standing, the exact involvement of the Emperor Showa during the Second Sino-Japanese War and WWII is still ambiguous. In the events leading up to World War 2, Japanese endeavors to grow the empire led to increased militarisation, which resulted in a weakened Diet, civil government and Imperial Family. Japanese citizens not only lost basic liberties such as freedom of speech, but millions of people in Japan, and around the world, lost their lives.
After the 1945 bombings of Hiroshima and Nagasaki, on 6th August and 9th August respectively, Emperor Hirohito broke the Imperial silence and announced Japan’s unconditional surrender to the allied forces. Over the next two years, during the Allied occupation of Japan, U.S. General Douglas MacArthur worked with the Japanese to draft their new constitution. Signed on 3rd May 1947, the Constitution of Japan is now also known as the Peace Constitution. It introduced workers’ and human rights and reversed the progression towards totalitarianism by declaring the country as a pacifist nation. More importantly, the 1947 Constitution introduced Article 9, which is a clause that forever renounces war as a sovereign right. In addition, the clause also pledges to not maintain any military forces with war potential.
When is Constitution Memorial Day?
Constitution Memorial Day is always held on May 3rd every year. It is the second public holiday of Golden Week, with the first being Showa Day. These holidays together serve as active reminders of Japan’s history, not only for the hardship endured through Imperial Japan, but also for their remarkable progression to a democratic nation.
Below is a table that includes what day Constitution Memorial Day falls on every year. Plan your holidays accordingly.
| Year | Date | Day |
| 2026 | May 3rd, 2026 | Sunday |
| 2027 | May 3rd, 2027 | Monday |
| 2028 | May 3rd, 2028 | Wednesday |
| 2029 | May 3rd, 2029 | Thursday |
| 2030 | May 3rd, 2030 | Friday |
How is Constitution Memorial Day Celebrated?
Similar to Showa Day, Constitution Memorial Day is not a “party” holiday. Rather, it’s a time to reflect upon the events of Japan’s recent and definitive history. To help expand public knowledge, Diet buildings are open to the public – allowing us to look around and ask questions to local officials. Public lectures about WWII and Japan’s history are also held around metropolitan areas.
What to do on Constitution Memorial Day
As Constitution Memorial Day is part of Golden Week, many people use this opportunity to take a vacation and reunite with their families outside of the cities. However, there are other ways to observe this important holiday. Here are some of our recommendations on what to do on Constitution Memorial Day.
Visit the Diet Buildings
Constitution Memorial Day is the only day where the National Diet Building is open to the public. Visitors can tour the premises and even get a glimpse of the legislative chambers. In addition, you can also get a glimpse into the original 1947 Constitution. This is a rare opportunity to take in the historical significance of the National Diet Building, and how the government plays a role in maintaining democracy.
Attend a lecture
If you’re leaning more into the educational aspects of Constitution Memorial Day, why not attend a public lecture? There are various lectures and events on teaching constitutional values and civic duties that are held across the country, most of them open to the public. To find such events, you might want to check out your local City Hall.
Reflect upon peace and democracy
As mentioned before, although many people take the opportunity to visit their families outside the city, it’s important to realize that this is a day to reflect upon how Japan became the peaceful, democratic nation that it is now. Without proper reflection, history will repeat itself.
Conclusion: Constitution Memorial Day is a day to reflect upon the role of government in maintaining the rights of its citizens.
Constitution Memorial Day is a significant day, as not only does it show Japan’s transformation from a zealous, militaristic empire to a peaceful, democratic country, but it’s also a day to reflect on the role of the government in maintaining the rights of its citizens. It shows that peace is the only way forward to furthering society.
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FAQ
What should I do on Constitution Memorial Day?
Aside from taking a day off from work, we recommend that you visit the National Diet Buildings to get a glimpse into how legislation gets decided.
Are shops and restaurants still open on Constitution Memorial Day?
Just like any public holiday in Japan, most shops and restaurants will still be open. However, banks, post offices, and ward offices will be closed.
What is the significance of Constitution Memorial Day in Japan?
It is a time to reflect upon the role of the government in maintaining the rights of its citizens, as well as the renunciation of war in order to move towards a peaceful society.