How the Hijri Calendar Works
A simple explanation of the lunar Hijri calendar and its link to Ramadan and Islamic occasions.
The Hijri calendar is lunar, so its months move through the Gregorian seasons. Ramadan, Hajj, Eid, Ashura, and Arafah are followed through Hijri dates.
Because the Hijri year is about 10 to 11 days shorter than the Gregorian year, Ramadan moves earlier each Gregorian year, with official announcements depending on local moon-sighting or authority decisions.
Connection to Prayer Times
Hijri date does not directly change the daily prayer calculation, but it matters for Ramadan, Eid, Ashura, and Arafah context.
That is why date conversion and Hijri calendar pages sit close to city prayer-time pages.
Sources and Methodology
These links explain the general source or method behind the page. They do not turn the page into a personal ruling, and local calendars or authorities still take precedence when they differ.
- Official Umm al-Qura Calendar - Calendar reference; local moon-sighting and authority announcements remain practical references.
- World Salah Times methodology and accuracy limits - Internal explanation of calculated times and their limits.
- Correction policy - How to report a city, timing, or link issue.