27 Rabi al-Thani 1448 AH · Sat, Oct 10, 2026
Jumada al-Ula 1448 AH
New Moon (Conjunction): 2026-10-10 15:50:05 UTC
Sunset
17:13
Moonset
16:42
Jumada al-Ula 1448 AH
Tue, Oct 13, 2026
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
Tue, Feb 9, 2027
Shawwal 1448 AH
Wed, Mar 10, 2027
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.