Constitution Day is a public holiday in Japan, known locally as 憲法記念日.
In 2026 it falls on Sunday 3 May; in 2027 on Monday 3 May.
The date is fixed, so only the weekday changes from year to year.
33 other countries in our calendar also have Constitution Day as a public holiday.
Dates, 2025 to 2028
| Year | Date | Weekday | Note |
|---|---|---|---|
| 2025 | 3 May | Saturday weekend | |
| 2026 | 3 May | Sunday weekend | |
| 2027 | 3 May | Monday long weekend | |
| 2028 | 3 May | Wednesday |
Constitution Day elsewhere
Around the worldAndorra14 MarchAnguilla7 AugustArmenia5 JulyCambodia24 SeptemberCayman Islands6 JulyCook Islands4 AugustDominican Republic9 NovemberEquatorial Guinea15 AugustGhana7 JanuaryKazakhstan—Kosovo9 AprilKyrgyzstan5 MayMarshall Islands1 MayMexico2 FebruaryNauru17 MayNepal19 SeptemberNiue19 OctoberNorthern Mariana Islands8 DecemberNorway17 MayPalau9 JulySeychelles18 JuneSint Maarten12 OctoberSouth Korea17 JulySpain—Svalbard and Jan Mayen17 MayTaiwan25 DecemberTajikistan6 NovemberThailand10 DecemberTonga2 NovemberTurks and Caicos Islands31 AugustUruguay18 JulyUzbekistan8 DecemberVanuatu5 October