28 Dhul Hijjah 1447 AH · Mon, Jun 15, 2026
Muharram 1448 AH
القمر الجديد (الاقتران): 2026-06-15 02:54:10 UTC
غروب الشمس
20:37
غروب القمر
21:33
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
Jumada al-Ula 1448 AH
Tue, Oct 13, 2026
Jumada al-Thani 1448 AH
Thu, Nov 12, 2026
Istanbul, straddling Europe and Asia at latitude 41.0°N, is a key reference city for crescent moon sighting in Turkey and the broader region. As the most populous city in both Turkey and Europe, Istanbul's moon sighting conditions are closely monitored by millions.
The city's position on the Bosphorus and its specific atmospheric conditions affect crescent visibility. Our predictions provide precise astronomical calculations accounting for Istanbul's unique coordinates and timezone.
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 Istanbul are based on local crescent moon visibility and may differ from other regions.