How long did Daniel in the Old Testament work?

Answer 1

A:The history in the Book of Daniel is a little confused, but it says that he was taken as a child from Jerusalem at the beginning of the Babylonian Exile, then continued to learn and then later work in Babylonian under both the Babylonian and Persian rulers. This is a period of well over 50 years.

The Book of Daniel is regarded by Old Testament scholars as a second-century-BCE novel, so although Daniel worked for at least 50 years in the book, there is no suggestion that there was ever a real Daniel who interpreted dreams and rose to high office in two opposing empires.