York Astronomical Society

This presentation will discuss the history of lunar calendars from over 3000 BC to the present (2025 CE), explaining their principles, followed by the science and jurisprudence of Islamic calendars. It will conclude with the methods and annual data of moon sightings in the UK for the public benefit. This is an in-person meeting and a must-attend for anyone interested in the history, culture, astronomy, and major world religions. For more info (e.g., fees), visit: Events page.

Onsite meetings held on the 1st & 3rd Fridays of the month [see Events page].

What’s Up! Jan 2025 (A monthly look at astronomical events in the sky & on Earth)

The York Astronomical Society was founded in 1972 and became a registered charity (no. 1174488) in 2017. Its observatory is at Beetle Bank Farm and has just finished undergoing renovation. The Society aims to demonstrate, educate and promote the subjects of astronomy and spaceflight in the York area. We hold regular public meetings with guest speakers and the Society hosts regular star parties.

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An Introduction to the YAS Observatory at Beetle Bank Farm

What’s visible tonight – a useful website giving details of the night sky, with rising and setting times of the moon and planets

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Generously sponsors the York Astronomical Society