Royal Observatory to livestream Ramadan moon sighting from Greenwich.

The Greenwich Royal Observatory will livestream a joint moon‑sighting event with the New Crescent Society on Feb. 18 to look for the crescent that marks the start of Ramadan, and members of the public can call in with their own sightings.

The Royal Observatory in Greenwich will host a livestreamed event with the New Crescent Society to look for the crescent moon that signals the start of Ramadan. The broadcast is scheduled for Feb. 18 and will include discussion of Islam and astronomy. Astronomers will have a telescope trained on the western horizon while presenters take calls from the public reporting sightings. The activity reflects growing local interest in moon sighting in the U.K. Key details: - The livestream is a collaboration between the Royal Observatory and the New Crescent Society and is set for Feb. 18. - Astronomers on the observatory roof will observe the western horizon for the new crescent while presenters discuss astronomy and faith. - Members of the public will be able to call in during the online broadcast with their own crescent sightings. - The sighting of the crescent moon determines the official start of Ramadan, which is expected this year to fall around March 20 if sighted. - The Royal Observatory has increased public engagement and says interest in Ramadan moon sighting has grown in recent years, with thousands joining online for related events. Summary: The event brings together scientific observation and religious practice and highlights local efforts to establish moon sighting within the U.K. The livestream will take place on Feb. 18 and the first confirmed sighting of the crescent will determine the official start of Ramadan.