Lunar-eclipse observation at Kath
· Kath (modern Beruniy), Karakalpakstan, Uzbekistan
Wikimedia Commons · Public domain; Creative Commons Public Domain Mark 1.0 · file Al-Biruni observed a lunar eclipse at Kath as part of a coordinated observation with Abu'l-Wafa in Baghdad, enabling comparison of the cities' longitudes. Coordinates represent modern Beruniy, identified with historical Kath.
