About Umm Al-Qura Calendar
Giving Muslims around the world one reliable, clear source for Saudi Arabia’s official Hijri calendar.
Our Mission
Ummalquracalendar.org started in 2015 to combine verified astronomical data from official Saudi sources with tools that make Islamic dates easy to find, convert, and plan around.
We launched after noticing that most Islamic calendar websites either showed conflicting dates, gave no explanation of which calendar system they followed, or simply couldn’t be trusted for administrative planning.
A Message from Our Founder
“We wanted to create something dependable: a single source that follows the official Umm al-Qura system, explaining the methodology transparently, and gives users accurate Hijri dates they can rely on for Ramadan, Eid, Hajj planning, and everyday Islamic timekeeping.”
This website exists to serve the global Muslim community. May Allah accept this effort and make it of benefit to the Ummah.
— Muhammad Al-Hassan, FounderMeet Our Team
A dedicated team of scholars, astronomers, and developers working to keep your calendar accurate.
Muhammad Al-Hassan
Founder & DirectorMuhammad studied Islamic Studies and has spent over a decade building Islamic digital resources. He founded the organization to create a trusted, transparent source for Hijri calendar information.
Dr. Fatima Zahra
Islamic Scholar & Fiqh AdvisorDr. Fatima holds a doctorate in Islamic Jurisprudence with a focus on Fiqh al-Awqat. She reviews all content to ensure it accurately reflects traditional scholarship.
Ahmad Khalil
Astronomer & Data SpecialistAhmad specializes in celestial mechanics. He verifies all Hijri calendar data against official Umm al-Qura sources and ensures our calculations meet KACST standards.
Yusuf Rahman
Lead DeveloperYusuf maintains the platform and develops our calendar tools, date converters, and prayer time features with over 8 years of experience in Islamic apps.
Aisha Noor
Content ManagerAisha manages educational content and ensures all resources are clear, accurate, and easy to navigate for Muslims worldwide.
How We Ensure Accuracy
We base all Hijri dates on the official Umm al-Qura calendar published by King Abdulaziz City for Science and Technology (KACST).
Dates are checked against official Saudi announcements and astronomical calculations before publication.
We update the calendar data each year to reflect the latest official KACST publication for upcoming Hijri months.
Our astronomy specialist reviews moon phase data monthly to catch any discrepancies early.
We investigate every date discrepancy reported by users and correct errors promptly.