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Hijri to Gregorian Date Conversion: How It Works

Published 28 October 2026 by Adawat

The Hijri calendar follows the moon, and the Gregorian calendar follows the sun. That is why the same event falls on a different Gregorian date each year.

Why the dates shift

A Hijri year is about 354 or 355 days, while a Gregorian year is about 365 days. So Hijri dates move roughly 11 days earlier against the Gregorian calendar every year.

Why a date can differ by one day

Hijri months begin with the sighting of the new moon, and countries do not always sight it on the same day. A converted date can therefore be one day off from the official announcement.

How to convert a date

  1. Open the Hijri and Gregorian dates tool.
  2. Enter the date and choose which calendar it is in.
  3. Read the converted date.

For religious occasions or official documents, always confirm the date with the official announcement in your country.

Try it now: Hijri and Gregorian datesOpen the tool

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