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

Hijri Calendar

Traditional Islamic calendar with Gregorian date overlays

Enter a zip code or use โ€œMy Locationโ€ to generate the calendar

Enter your location to get started

The Hijri calendar is based on moon visibility predictions that vary by location. Use the search bar above or click โ€œMy Locationโ€ to generate the calendar.