Crescent MoonSighting Predictions
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Moon Sighting

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

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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 Christchurch

New ZealandOceania-43.53°, 172.64°

28 Jumada al-Ula 1448 AH · Mon, Nov 9, 2026

Visibility Prediction
0/7 thresholds met
-43.5321, 172.6362Mon, Nov 9, 2026·28 Jumada al-Ula 1448 AHPacific/Auckland

Jumada al-Thani 1448 AH

New Moon (Conjunction): 2026-11-09 07:02:06 UTC

AEST: 18:02:06AWST: 15:02:06NZST: 20:02:06
0%confidence
Not Possible

Sunset

20:25

Moonset

20:36

Astronomical Parameters

Moonset Lag11.3 min
Moon Age0.4 hrs
Moon Altitude0.9 °
Elongation4.5 °
Illumination0.0 %
ARCV1.7 °
Crescent Width0.0 ′
Upcoming Islamic Months in Christchurch

Jumada al-Thani 1448 AH

Wed, Nov 11, 2026

69% Likely

Rajab 1448 AH

Fri, Dec 11, 2026

73% Likely

Sha'ban 1448 AH

Sun, Jan 10, 2027

62% Likely

Ramadan 1448 AH

Tue, Feb 9, 2027

13% Very Difficult

Shawwal 1448 AH

Thu, Mar 11, 2027

12% Very Difficult

Dhul Qi'dah 1448 AH

Fri, Apr 9, 2027

3% Unlikely

Moon Sighting in Oceania

Oceania presents unique crescent moon sighting conditions, with cities spanning from Perth in Western Australia to Auckland in New Zealand. Southern hemisphere locations experience reversed seasonal patterns compared to the Northern hemisphere, affecting crescent visibility timing.

Muslim communities in Australia, New Zealand, and the Pacific Islands rely on accurate Hilal predictions tailored to their specific locations. Our system accounts for each city's precise coordinates, delivering reliable forecasts for Islamic month determinations in this diverse region.

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 Christchurch

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

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