Sudair Observatory announces the scientific details of the Eid crescent sighting

13.03.2026
1 min read
The Al-Majmaah University Astronomical Observatory in Hawtat Sudair announced the details of the calculations for sighting the crescent moon of Shawwal 1447 AH, confirming its readiness to observe the new moon according to the Umm al-Qura calendar and clarifying the precise scientific conditions for moonset and sunset. The observatory explained that the scientific calculations for the sighting day, Wednesday, the 29th of Ramadan, corresponding to March 18th, indicate that the moon will set approximately thirty minutes before the sun at the observation site. It stated that the moon will set that day at 5:38 PM, while the sun will disappear from view at 6:08 PM. Regarding the conjunction phase, the calculations indicated that it will occur at dawn on the following day
The Al-Majmaah University Astronomical Observatory in Hawtat Sudair announced the details of the calculation data for the investigation crescent moon of Shawwal For the year 1447 AH, confirming his readiness to observe the crescent moons according to the Umm al-Qura calendar and explaining the precise scientific conditions for the setting of the moon and sun.

The astronomical observatory explained that the scientific calculations for the day of observation, Wednesday the twenty-ninth of Ramadan, corresponding to the eighteenth of March, indicate that the moon will set before the sun by about thirty minutes at the observation site.

He explained that the moon will set on that day at exactly 5:38 PM, while the sun will disappear from view at 6:08 PM.

Conjugation phase

The calculations indicated that the conjunction phase would occur at dawn on Thursday, the last day of Ramadan, at exactly 4:26 AM Riyadh time.

The observatory experts noted that the sun in Mecca will set on Thursday at 6:32 PM, followed by the crescent moon setting at 7:01 PM. However, at the observatory's location, the sun will set at 6:08 PM at an azimuth of 269 degrees, and the crescent moon will set at 6:38 PM at an azimuth of 275 degrees. This means the crescent moon will set 30 minutes after the sun, with an altitude of 6.7 degrees and an elongation of 7.81 degrees.

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