Commemoration of Omar Khayyam
National occasion Strength of evidence: Strong
Honouring Omar Khayyam, mathematician, astronomer and poet of the Rubaiyat.
Tuesday May 18, 2027
Gregorian
May 18, 2027
Lunar Hijri
Dhuʻl-Hijjah 12, 1448
Solar Hijri
Ordibehesht 28, 1406