Planning your Eid Al Adha celebrations? The International Astronomical Centre has announced that Eid Al Adha 2025 will likely begin on Friday, June 6 across most Islamic countries, following the predicted sighting of the Dhul Hijjah crescent moon on Tuesday, May 27.
When is Eid Al Adha 2025? Official Astronomical Predictions
The International Astronomical Centre (IAC) predicts Eid Al Adha will start on June 6, 2025. This calculation is based on the expected sighting of the Dhul Hijjah crescent moon on Tuesday, May 27, making Wednesday, May 28 the first day of the new Hijri month.
Ibrahim Al Jarwan, Chairman of the Emirates Astronomical Society and astronomy expert, supports these predictions through detailed astronomical calculations. His analysis confirms that Dhul Hijjah’s first day will fall on Wednesday, May 28, 2025.

Arafat Day 2025: Thursday, June 5
Arafat Day will occur on Thursday, June 5, 2025, one day before Eid Al Adha begins. This sacred day marks the climax of the Hajj pilgrimage, when millions of Muslims gather at Mount Arafat for prayer and reflection.
For Muslims worldwide, knowing Arafat Day’s date helps in planning spiritual observances and understanding the complete Hajj timeline leading to Eid celebrations.
Moon Sighting Conditions for Dhul Hijjah 2025
The astronomical calculations reveal specific conditions for the crescent moon sighting on May 27:
Visibility varies by geographic location. Engineer Mohammed Shawkat Odeh, IAC director, explains that the crescent moon can be observed using telescopes from Central and Western Asia, most African regions, and Europe. However, residents in large parts of the Americas may see it with the naked eye.
Technical details for Abu Dhabi and Makkah show similar viewing conditions. In Abu Dhabi, the moon sets 38 minutes after sunset at 13 hours and 29 minutes old, positioned 7.7 degrees from the sun. Makkah experiences comparable conditions with the moon setting 39 minutes post-sunset at 14 hours and 17 minutes old, 8.1 degrees from the sun.
Understanding Moon Sighting Science
The IAC emphasises that crescent visibility depends on multiple factors beyond age and duration. Angular distance from the sun and height above the horizon at observation time significantly affect whether the moon can be spotted.
These scientific considerations explain why different regions may confirm moon sightings on different dates, leading to variations in Eid celebrations across countries.
How UAE Businesses Prepare for Eid Al Adha 2025
Understanding Eid Al Adha dates helps UAE employers and employees plan effectively. Many companies begin holiday preparations weeks in advance, coordinating staff schedules and project timelines around the expected celebrations.
Employment regulations in the UAE typically provide for Eid holidays, but specific arrangements vary by company and contract terms. Knowing predicted dates allows better workforce planning and client communication.
Planning Your Eid Al Adha 2025 Celebrations
With June 6 as the likely start date, families can begin organising travel, gatherings, and traditional celebrations. The four-day Eid period typically extends through Monday, June 9, depending on official government announcements.
Travel bookings and accommodation often see increased demand during Eid periods. Early planning based on these astronomical predictions can help secure better rates and availability.
Key Takeaway
Eid Al Adha 2025 is predicted to begin on Friday, June 6, following the Dhul Hijjah crescent moon sighting on May 27. Arafat Day will fall on Thursday, June 5, with celebrations extending through the weekend across most Islamic countries.
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