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Moon Sighting

Islamic crescent moon visibility predictions powered by astronomical calculations and machine learning.

Data Sources

JPL DE421 Ephemeris (NASA)
CrescentWatch.org observations
Skyfield astronomical library

Methodology

5 astronomical visibility parameters
ML logistic regression model
2,000+ historical training records

Moon Sighting Project · Astronomical predictions are estimates and should be used alongside traditional moon sighting practices

Islamic Calendar

Predicted start dates for upcoming Islamic months based on your location

Enter a zip code or use “My Location” for calendar predictions

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The Islamic calendar is based on moon visibility predictions that vary by location. Use the search bar above or click “My Location” to see predicted start dates for upcoming Islamic months.