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Constitution Memorial Day in Japan

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2027 holiday dates

Monday, 3 May 2027

Confirmed — source checked

This is the first listed date for this year; a separate observance date has not been assigned.

About Constitution Day

Constitution Memorial Day, Kenpō Kinenbi, is a Japanese national holiday on 3 May. It commemorates the Constitution of Japan taking effect on 3 May 1947 and forms part of Golden Week.

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Public holiday / closure dates

  • — Public of holiday period · Confirmed — source checked

Bank, office and school arrangements require the applicable authority or institution notice. Missing scope data does not mean open.

Next supported occurrence

Monday, 3 May 2027 · Confirmed — source checked

Next listed holiday day on or after today; this can be a closure day rather than the festival date.

2026 dates

  • — Public of holiday periodConfirmed — source checked

2028 dates

  • — Public of holiday periodConfirmed — source checked

Official sources and date status

Recorded confirmation and independent source review are shown separately. An institution-specific notice does not establish closure for every employer or school.

www8.cao.go.jp

Official public holiday law or calendar

Confirmed · Scope: public · Checked 2026-09-27

Japan’s Cabinet Office tables establish 2026 and 2027, including substitute and citizen’s holidays. The 2028 equinoxes remain provisional until the Cabinet Office publishes the annual list in February 2027.

Office arrangements

Government offices close. If 3 May falls on Sunday, the statutory substitute-holiday rule can create a later holiday after the adjoining national holidays.

Bank arrangements

Bank of Japan offices close on national holidays and substitute holidays. Branch and settlement calendars reflect the full Golden Week sequence.

School arrangements

Schools close for the national holiday, with the adjacent holidays often creating several consecutive days away from class.

History

The National Holidays Act describes the day as commemorating implementation of the Constitution and anticipating the nation's continued growth.

Why it matters

The observance highlights constitutional government, peace and civic institutions. Its Golden Week position also makes it operationally important.

Observance

Public institutions may offer constitutional programs or special access, while many residents travel during the wider Golden Week sequence.

Travel and planning

Golden Week is one of Japan's busiest travel periods. Book trains, flights and accommodation well in advance.

Frequently asked questions

When is Constitution Memorial Day?

It is observed on 3 May.

What does it commemorate?

The Constitution of Japan took effect on 3 May 1947.

Why can Golden Week last longer?

Adjacent holidays and statutory substitute or between-holidays rules can add non-working days.

View all Japan public holidays 2027

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