Moon Sighting
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Moon Sighting

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

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  • Cairo
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Data Sources

  • JPL DE421 Ephemeris (NASA)
  • CrescentWatch.org observations
  • MoonSighting.org.co.uk observations
  • Chicago Hilal Committee observations
  • Skyfield astronomical library

Methodology

  • 7 astronomical visibility parameters
  • ML Random Forest model
  • 2,000+ historical training records
Feedback & Feature Requests

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

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Moon Sighting in Cairo

North AfricaAfrica30.04°, 31.24°

28 Dhul Hijjah 1447 AH · Mon, Jun 15, 2026

Visibility Prediction
1/7 thresholds met
30.0444, 31.2357Mon, Jun 15, 2026·28 Dhul Hijjah 1447 AHAfrica/Cairo

Muharram 1448 AH

New Moon (Conjunction): 2026-06-15 02:54:10 UTC

WAT: 03:54:10CAT: 04:54:10EAT: 05:54:10SAST: 04:54:10
4%confidence
Unlikely

Sunset

19:57

Moonset

20:44

Astronomical Parameters

Moonset Lag46.7 min
Moon Age14.1 hrs
Moon Altitude7.6 °
Elongation8.4 °
Illumination0.5 %
ARCV8.4 °
Crescent Width0.2 ′
Upcoming Islamic Months in Cairo

Muharram 1448 AH

Wed, Jun 17, 2026

98% Very Likely

Safar 1448 AH

Thu, Jul 16, 2026

88% Very Likely

Rabi al-Awwal 1448 AH

Sat, Aug 15, 2026

95% Very Likely

Rabi al-Thani 1448 AH

Mon, Sep 14, 2026

98% Very Likely

Jumada al-Ula 1448 AH

Tue, Oct 13, 2026

78% Very Likely

Jumada al-Thani 1448 AH

Thu, Nov 12, 2026

92% Very Likely

Moon Sighting in Africa

Cairo, the capital of Egypt at latitude 30.0°N, is one of the most important reference cities for moon sighting in North Africa and the Arab world. The city's generally clear desert skies provide favorable conditions for crescent observation.

As the largest city in the Arab world, Cairo's moon sighting reports influence Islamic calendar determinations across the region. Our system delivers precise predictions based on Cairo's specific astronomical conditions.

How Our Predictions Work

Our system calculates five key astronomical parameters at sunset: moonset lag, moon age, moon altitude, sun-moon elongation, and illumination percentage. These are fed into a machine learning model trained on over 2,000 historical crescent sighting observations to produce a confidence score from 0% to 100%.

Moonset Lag

≥ 45 min

Moon Age

≥ 21 hrs

Altitude

≥ 8°

Elongation

≥ 10°

Illumination

≥ 0.9%

Upcoming Islamic Events in Cairo

Ramadan 2026

The holy month of fasting, prayer, and reflection observed by Muslims worldwide.

Eid al-Fitr 2026

The Festival of Breaking the Fast, celebrating the end of Ramadan.

Eid al-Adha 2026

The Festival of Sacrifice, the holiest of the two Islamic holidays, marking the culmination of Hajj.

Islamic New Year 2026

The first day of Muharram, marking the beginning of a new Islamic (Hijri) year.

Event dates for Cairo are based on local crescent moon visibility and may differ from other regions.

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