From the “Contemporary Iran” package Ferdowsi & Persian Language Day The 25th of Ordibehesht, commemorating the poet Ferdowsi and the Persian language Historical confidence: Attested Iran · Observance In nearby years 1403 Tuesday 25 Ordibehesht 1403 14 May 2024 1404 Thursday 25 Ordibehesht 1404 15 May 2025 1405 Friday 25 Ordibehesht 1405 15 May 2026 1406 Saturday 25 Ordibehesht 1406 15 May 2027 1407 Sunday 25 Ordibehesht 1407 14 May 2028 Other occasions in this package NowruzNowruz Holidays (Days 2–4)Islamic Republic DayArmy DayIRGC Founding AnniversaryTeachers' DayPersian Gulf National DayWorkers' Day