Hijri Date Converter (Islamic ↔ Gregorian)

Convert Hijri (Islamic) dates to Gregorian and back, day by day — plus the Ottoman Rumi calendar used in records from 1840 to 1925. Today is 20 Rabi' al-Thani 1448 AH.

Gregorian29 October 1923Monday
Hijri (Islamic)19 Rabi' al-Awwal 1342Historical dates may differ by ±1 day
Rumi (Ottoman fiscal calendar)29 Teşrinievvel 1339
Julian16 October 1923Old Style date

About the Hijri calendar

The Hijri calendar is a lunar calendar counted from the Prophet Muhammad's migration (Hijra) from Mecca to Medina in 622 CE. Months have 29 or 30 days and a year has about 354 days, so Ramadan and the Eids move about 11 days earlier each Gregorian year.

Islamic months of 1448 AH

MonthFirst day (Gregorian)
MuharramJune 16, 2026
SafarJuly 15, 2026
Rabi' al-AwwalAugust 14, 2026
Rabi' al-ThaniSeptember 12, 2026
Jumada al-AwwalOctober 12, 2026
Jumada al-ThaniNovember 11, 2026
RajabDecember 10, 2026
Sha'banJanuary 9, 2027
RamadanFebruary 8, 2027
ShawwalMarch 9, 2027
Dhu al-QadahApril 8, 2027
Dhu al-HijjahMay 7, 2027

Historic dates in three calendars

EventGregorianRumiHijri
First Ottoman constitutionDecember 23, 187611 Kanunuevvel 12926 Dhu al-Hijjah 1293
Second Constitutional EraJuly 23, 190810 Temmuz 132424 Jumada al-Thani 1326
Atatürk lands at SamsunMay 19, 191919 Mayıs 133519 Sha'ban 1337
Grand National Assembly opensApril 23, 192023 Nisan 13364 Sha'ban 1338
Battle of DumlupınarAugust 30, 192230 Ağustos 13387 Muharram 1341
Proclamation of the RepublicOctober 29, 192329 Teşrinievvel 133919 Rabi' al-Awwal 1342

Frequently Asked Questions

How do I convert a Hijri date to Gregorian?
The Islamic (Hijri) calendar is lunar and a Hijri year is about 354 days, so it cannot be converted by simple addition. This converter uses the Umm al-Qura calculation; for historical documents the start of a month depended on sighting the crescent, so results can differ by ±1 day.

What is today's Hijri date?
Today is 20 Rabi' al-Thani 1448 AH (Umm al-Qura).

What is the Ottoman Rumi calendar?
The Rumi (Ottoman fiscal) calendar was used for official records from 1840 to 1925. It was based on the Julian calendar with the year starting on 1 March, and its year numbers were about 584 lower than Gregorian years.