27 Jumada al-Ula 1448 AH · Mon, Nov 9, 2026
Jumada al-Thani 1448 AH
New Moon (Conjunction): 2026-11-09 07:02:06 UTC
Sunset
16:19
Moonset
15:46
Jumada al-Thani 1448 AH
Thu, Nov 12, 2026
Rajab 1448 AH
Sat, Dec 12, 2026
Sha'ban 1448 AH
Sun, Jan 10, 2027
Ramadan 1448 AH
Mon, Feb 8, 2027
Shawwal 1448 AH
Wed, Mar 10, 2027
Dhul Qi'dah 1448 AH
Fri, Apr 9, 2027
London's northern latitude (51.5°N) creates unique challenges for crescent moon visibility. During summer months, extended twilight can make the thin crescent difficult to spot, while winter months may offer better contrast but shorter windows above the horizon.
As home to one of Europe's largest Muslim communities, London's crescent visibility conditions are closely watched. Our predictions account for the city's specific sunset and moonset times, providing reliable forecasts for determining Islamic month start dates.
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%
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 London are based on local crescent moon visibility and may differ from other regions.