28 Shawwal 1447 AH · Fri, Apr 17, 2026
Dhul Qi'dah 1447 AH
Nouvelle Lune (Conjonction): 2026-04-17 11:51:48 UTC
Coucher du soleil
18:15
Coucher de la lune
18:08
Dhul Qi'dah 1447 AH
Sun, Apr 19, 2026
Dhul Hijjah 1447 AH
Tue, May 19, 2026
Muharram 1448 AH
Wed, Jun 17, 2026
Safar 1448 AH
Thu, Jul 16, 2026
Rabi al-Awwal 1448 AH
Sat, Aug 15, 2026
Rabi al-Thani 1448 AH
Mon, Sep 14, 2026
East Asia encompasses a wide range of latitudes, from Tokyo and Seoul in the temperate zone to Beijing further north. Muslim communities in Japan, South Korea, China, and Russia each face unique crescent visibility conditions shaped by their geographical position.
Our predictions account for each city's specific astronomical conditions, providing reliable forecasts for communities across the region. East Asian cities often experience distinct seasonal patterns that affect crescent visibility windows.
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 Tokyo are based on local crescent moon visibility and may differ from other regions.