Moon sighting committees in the Arab world and Muslim-majority nations will observe the crescent moon marking the start of Dhu Al Hijjah on Tuesday, May 27, 2025. Astronomers say the moon may be seen through telescopes in Asia, Africa, and parts of Europe, and possibly with the naked eye in the Americas.

The Al Khatm Observatory in Abu Dhabi captured an image of the Dhu Al Qadah crescent in daylight on May 26, 2025, when the moon was 18 hours old—making it a rare and valuable observation for refining lunar models.

Saudi Arabia and the UAE have urged the public and astronomers to participate in moon sightings on May 27, encouraging reports to local authorities.

In the UAE, the crescent will likely be visible by telescope due to its low separation angle and age, with similar conditions expected in Mecca. Visibility could improve slightly in areas like Cairo and Rabat.

If the moon is seen on May 27, Dhu Al Hijjah begins on May 28, placing Arafat Day on June 5 and Eid Al Adha on June 6. If not, Dhu Al Hijjah will start on May 29, with Eid falling on June 7.

The UAE expects Eid Al Adha to be observed from June 6–8, with Arafat Day on June 5, based on astronomical predictions. The final dates depend on official moon sightings.

Under UAE law, public holidays falling on weekends are not shifted or compensated. Eid Al Adha, also known as the “Festival of Sacrifice,” honors Prophet Ibrahim’s devotion to God and coincides with the Hajj pilgrimage.

Employees required to work on public holidays must be given a day off or extra pay as per UAE Labour Law.