Hey, perhaps someone finding this thread would know. I've found a good Jewish "ecclesiastical" calendar in chabad.org. However, I've not found any good Islamic

Hey, perhaps someone finding this thread would know. I've found a good Jewish "ecclesiastical" calendar in chabad.org. However, I've not found any good Islamic Hijri calendars. I've been back and forth with Wikipedia and I can honestly find neither a current "observational" calendar, nor a tabular, predictive calendar that can compute or approximate dates in the future or past. Arabic language/UI would be OK if it can be accurately translated. I can't read the text in that language.