Croissant Lunaire
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Croissant Lunaire

Prédictions de visibilité du croissant lunaire islamique basées sur des calculs astronomiques et l'apprentissage automatique.

Villes principales

  • New York
  • Los Angeles
  • Chicago
  • Toronto
  • London
  • Istanbul
  • Makkah
  • Dubai
  • Riyadh
  • Cairo
  • Karachi
  • Lahore
  • Dhaka
  • Jakarta
  • Mumbai
  • Kuala Lumpur
  • Tehran
  • Houston
  • Dearborn
  • Nairobi

Sources de données

  • Éphémérides JPL DE421 (NASA)
  • Observations de CrescentWatch.org
  • Observations de MoonSighting.org.co.uk
  • Observations du Comité Hilal de Chicago
  • Bibliothèque astronomique Skyfield

Méthodologie

  • 7 paramètres de visibilité astronomique
  • Modèle ML Random Forest
  • Plus de 2 000 enregistrements d'entraînement historiques
Commentaires et demandes de fonctionnalités

Projet d'observation lunaire · Les prédictions astronomiques sont des estimations et doivent être utilisées en complément des pratiques traditionnelles d'observation lunaire

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Moon Sighting in Portland

United StatesUnited States45.52°, -122.68°

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

Prédiction de visibilité
7/7 seuils atteints
45.5152, -122.6784Mon, Jun 15, 2026·28 Dhul Hijjah 1447 AHAmerica/Los_Angeles

Muharram 1448 AH

Nouvelle Lune (Conjonction): 2026-06-15 02:54:10 UTC

PT: Jun 14, 19:54:10MT: Jun 14, 20:54:10CT: Jun 14, 21:54:10ET: Jun 14, 22:54:10
71%confiance
Probable

Coucher du soleil

21:01

Coucher de la lune

22:24

Paramètres astronomiques

Retard du coucher de lune83.2 min
Âge de la lune25.1 hrs
Altitude de la lune10.9 °
Élongation14.7 °
Illumination1.7 %
ARCV11.7 °
Largeur du croissant0.5 ′

Perspective d'observation — United States

Le croissant devrait être observé aux United States

Meilleure chance : Jacksonville, FL (93% — Very Likely) le soir du Mon, Jun 15, 2026

Si observé, le 1er Muharram 1448 AH débutera le Tue, Jun 16, 2026

Perspective régionale basée sur la ville américaine ayant la plus forte probabilité. L'observation locale reste décisive pour votre code postal.

Upcoming Islamic Months in Portland

Muharram 1448 AH

Tue, Jun 16, 2026

71% Likely

Safar 1448 AH

Thu, Jul 16, 2026

88% Very Likely

Rabi al-Awwal 1448 AH

Sat, Aug 15, 2026

92% Very Likely

Rabi al-Thani 1448 AH

Mon, Sep 14, 2026

88% Very Likely

Jumada al-Ula 1448 AH

Tue, Oct 13, 2026

25% Very Difficult

Jumada al-Thani 1448 AH

Thu, Nov 12, 2026

67% Likely

Moon Sighting in the United States

The United States spans multiple time zones, creating varied crescent moon sighting conditions from coast to coast. Western cities like San Francisco and Los Angeles typically benefit from later sunset times relative to moonset, while eastern cities like New York and Miami may experience shorter moonset lag times.

Muslim communities across America rely on accurate Hilal visibility predictions to determine the start of Islamic months, particularly for Ramadan, Shawwal (Eid al-Fitr), and Dhul Hijjah (Eid al-Adha). Our predictions combine NASA JPL ephemeris data with machine learning trained on over 2,000 historical observations.

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 Portland

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 Portland are based on local crescent moon visibility and may differ from other regions.

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