Hijri to Gregorian Date Converter (Umm Al-Qura)
Instantly convert between Hijri and Gregorian dates using the official Umm Al-Qura calendar. Free tool supporting age calculation, contract dates, and religious occasions.
The Definitive Guide to Hijri and Gregorian Calendar Conversion
The Islamic Hijri calendar holds immense cultural and religious significance, governing festive observances and civil records across the Muslim world. Initiated with the Prophet Muhammad's migration from Mecca to Medina in 622 CE, the calendar operates on lunar synodic cycles where months span either 29 or 30 days based on crescent visibility.
The Twelve Hijri Months in Annual Sequence
The year comprises 12 lunar months: Muharram, Safar, Rabi' al-Awwal, Rabi' al-Thani, Jumada al-Ula, Jumada al-Akhirah, Rajab, Sha'ban, Ramadan, Shawwal, Dhu al-Qi'dah, and Dhu al-Hijjah. Four are sacred months under Islamic tradition.
Frequently Asked Questions About Date Conversion
What is the Hijri lunar calendar and the Umm al-Qura standard?
The Hijri calendar is an Islamic lunar calendar governed by the synodic cycle of the moon, spanning 354 or 355 days annually. The Umm al-Qura calendar is the official Saudi Arabian standard calculating prayer timings, lunar months, and administrative dates with astronomical precision.
Why does the Hijri year differ from the Gregorian year by roughly 11 days?
Solar Gregorian years encompass 365.24 days, whereas lunar Hijri years average 354.36 days. This 10-to-12-day differential shifts Islamic occasions like Ramadan through all four climatic seasons over a 33-year cycle.
How accurate is the date conversion algorithm?
Uddati utilizes verified astronomical algorithms cross-referenced against the official Umm al-Qura calendar tables, ensuring exact conversion results for age determination and official documentation.
Is this converter accepted for government and business deadlines?
Yes, the converted output aligns with official government portals (such as Absher, Qiwa, and Najiz) in Saudi Arabia and regional GCC authorities.