Moon Sighting
HomeMapsCitiesCountriesNext 12 MonthsCalendarEventsHistoryObservationsAI ChatAboutContact
Moon Sighting

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

Top Cities

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

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

  1. Home
  2. Cities
  3. Chennai

Moon Sighting in Chennai

IndiaIndian Sub-Continent13.08°, 80.27°

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

Visibility Prediction
0/7 thresholds met
13.0827, 80.2707Mon, Jun 15, 2026·28 Dhul Hijjah 1447 AHAsia/Kolkata

Muharram 1448 AH

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

IST: 08:24:10PKT: 07:54:10BST: 08:54:10AFT: 07:24:10
1%confidence
Unlikely

Sunset

18:36

Moonset

19:04

Astronomical Parameters

Moonset Lag28.5 min
Moon Age10.2 hrs
Moon Altitude5.0 °
Elongation6.6 °
Illumination0.3 %
ARCV5.9 °
Crescent Width0.1 ′
Upcoming Islamic Months in Chennai

Muharram 1448 AH

Wed, Jun 17, 2026

98% Very Likely

Safar 1448 AH

Thu, Jul 16, 2026

90% Very Likely

Rabi al-Awwal 1448 AH

Sat, Aug 15, 2026

98% Very Likely

Rabi al-Thani 1448 AH

Sun, Sep 13, 2026

80% Very Likely

Jumada al-Ula 1448 AH

Tue, Oct 13, 2026

93% Very Likely

Jumada al-Thani 1448 AH

Thu, Nov 12, 2026

98% Very Likely

Moon Sighting in the Indian Sub-Continent

The Indian Sub-Continent is home to one of the world's largest Muslim populations, spanning India, Pakistan, Bangladesh, Sri Lanka, Afghanistan, Nepal, and the Maldives. The region's varied latitudes, from the Maldives near the equator to Peshawar in the north, create diverse sighting conditions.

Cities like Karachi, Mumbai, Dhaka, and Lahore rely on accurate crescent predictions for determining Islamic month start dates. Our system provides city-specific forecasts using precise astronomical calculations, helping communities across the sub-continent prepare for important Islamic occasions.

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 Chennai

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

More Cities in Indian Sub-Continent

Mumbai

India

New Delhi

India

Kolkata

India

Bangalore

India

Hyderabad

India

Lucknow

India

Karachi

Pakistan

Lahore

Pakistan