
Islamic horary quadrant, 1727-1728
1727-1728
1727-1728
2000-100 BCE
1720
1725
1725
1730
4000-2001 BCE
1990-96
1720-1730
1705-1737
1725
1720
1990-95
1610; 1923
1642-1649 (original); 1883 (model)
1960-1979
1668; 1924
1721
1720
circa 3000 BCE
1737
1728
2000 BCE
1720
1736
1736
1721
1724
1734
1726
1732
1734
1729
1728
1736
1724
1723
1723
1723
1732
1722
1723
1731
1723
1734
1676; 1840-1865
1736
1732-1734
1734
1736