From the “Contemporary Iran” package Constitution Day Commemorates the signing of Iran's 1906 Constitutional Decree Historical confidence: Attested Iran · Observance In nearby years 1403 Monday 12 Azar 1403 2 December 2024 1404 Wednesday 12 Azar 1404 3 December 2025 1405 Thursday 12 Azar 1405 3 December 2026 1406 Friday 12 Azar 1406 3 December 2027 1407 Saturday 12 Azar 1407 2 December 2028 Other occasions in this package NowruzNowruz Holidays (Days 2–4)Islamic Republic DayArmy DayIRGC Founding AnniversaryTeachers' DayPersian Gulf National DayWorkers' Day