Literature on Computing and Observing the First Visibility of the Lunar Crescent

I. Traditional Techniques for Computing the Visibility of the Lunar Crescent

II. Modern Techniques for Computing the Visibility of the Lunar Crescent and Observations of Young Lunar Crescent

III. Relevant Entries in The Encyclopaedia of Islam: New Edition (Leiden: E.J. Brill)

IV. Websites on the Prediction of the Visibility of the Lunar Crescent

Similar diagrams predicting the visibility of the young lunar crescent can also be obtained from the following websites:

Useful websites for determining the actual location of the moon (and other celestial objects) in the sky at any time from any terrestrial location:


I am grateful to Qamar Uddin (York, UK) for suggesting several improvements to the lunar crescent visibility maps. The world maps are based on the ETOPO1 Global Relief Model.