A Japanese national holiday celebrated on May 3 to commemorate the enactment of the Constitution of Japan in 1947
English Term: Constitution Memorial Day
Japanese (Kanji): 憲法記念日
Hiragana: けんぽうきねんび
Romaji: Kenpō Kinenbi
A Japanese national holiday celebrated on May 3 to commemorate the enactment of the Constitution of Japan in 1947, marking the foundation of the country's modern democratic government.
Constitution Memorial Day（憲法記念日 / けんぽうきねんび / Kenpō Kinenbi） is a national holiday in Japan observed on May 3.
The day commemorates the enforcement of the Constitution of Japan, which came into effect on May 3, 1947 after World War II.
The constitution established several key principles for modern Japan, including:
Because of these principles, Constitution Memorial Day is a moment when citizens reflect on the structure and meaning of the Japanese political system.
Although the holiday marks an important political event, it is not usually celebrated through large public festivals.
Instead, Constitution Memorial Day is often observed through:
For many people, however, the day functions primarily as part of Golden Week, one of Japan's longest holiday periods.
As a result, the holiday is commonly associated with travel, family time, and seasonal events rather than formal political ceremonies.
Constitution Memorial Day occupies an important position within Golden Week, a sequence of national holidays that occur from late April to early May.
The holiday sequence typically includes:
Because these holidays appear close together, many people take several days off, creating a long vacation period.
National holidays such as Constitution Memorial Day rarely appear directly as story events in anime.
However, the Golden Week vacation period often appears as a narrative opportunity when characters have time away from school.
Typical Golden Week scenes in anime may include:
For example, holiday travel and relaxed seasonal moments appear in series such as Laid-Back Camp and Non Non Biyori, where characters experience everyday life during quiet vacation periods.
Constitution Memorial Day reflects an important historical turning point in modern Japanese society.
The Constitution of Japan introduced democratic governance and new civil rights protections following the end of World War II.
While the holiday itself is often experienced simply as part of Golden Week, it continues to represent the legal and political foundation of contemporary Japan.
Understanding this holiday also helps international viewers recognize why early May frequently appears as a long break period in Japanese school and workplace settings.
→ Golden Week（ゴールデンウィーク）
A sequence of Japanese national holidays in late April and early May
→ Showa Day（昭和の日）
A Japanese national holiday on April 29 celebrating the Showa era
→ Children's Day（こどもの日）
A Japanese national holiday on May 5 celebrating children