Cross reference
Daniel 1:21
21 And Daniel continued even unto the first year of king Cyrus.
Daniel 6:28
28 So this Daniel prospered in the reign of Darius, and in the reign of Cyrus the Persian.
Daniel 10:1
1 In the third year of Cyrus king of Persia a thing was revealed unto Daniel, whose name was called Belteshazzar; and the thing was true, even a great warfare: and he understood the thing, and had understanding of the vision.