Constantinople (Istanbul), Turkey — June 741
Hovering crescents and fire
In the reign of Constantine, Copronymus, son of Leo, Emperor of Byzantium, three columns of fire and flame appeared in the sky during the month of June. The same phenomenon was also seen in the month of September: “There appeared a thing, also in 735 AD, like a half-moon, in the northern quadrant of the sky, and little by little, over a rather long time, it passed to the southern quarter, and then returned to the north, and finally descended under the Earth.” (i.e., presumably dropped down below the horizon).
Source: Jean-Baptiste Chabot, Chronique de Michel le Syrien, patriarcheJacobite d’Antioche 1166-1199 (Paris, 1899-1910). 52. Case: W003