From the “Contemporary Iran” package Petrochemical & Cement Industry Day A day honouring Iran's petrochemical and cement industries Historical confidence: Reconstructed Iran · Observance In nearby years 1403 Saturday 8 Dey 1403 28 December 2024 1404 Monday 8 Dey 1404 29 December 2025 1405 Tuesday 8 Dey 1405 29 December 2026 1406 Wednesday 8 Dey 1406 29 December 2027 1407 Thursday 8 Dey 1407 28 December 2028 Other occasions in this package NowruzNowruz Holidays (Days 2–4)Islamic Republic DayArmy DayIRGC Founding AnniversaryTeachers' DayPersian Gulf National DayWorkers' Day