Seventy weeks (70*7=490 yrs) are determined for your people and for your holy city …
Know therefore and understand,that from the going forth of the command to restore and build Jerusalem until Messiah the Prince, there shall be seven weeks and sixty-two weeks … (69*7=483 yrs)
After the sixty-two weeks Messiah (Jesus) shall be cut off, but not for himself; and the people (Roman troops in ad 70) of the prince who is to come (Titus, a roman general and prince) shall destroy the city and the sanctuary. The end of it shall be with a flood, and till the end of the war desolations are determined.
He (Messiah) shall confirm a covenant with many for one week; but in the middle of the week (3½ yrs after his revealing) shall bring an end to sacrifice and offering. (temple curtain torn) And on the wing of abominations (ongoing sacrifice an abomination) shall be one who makes desolate, (Titus destroys temple) even until the consummation, which is determined, is poured out on the desolate. (judgement on Jerusalem)
Dan 9:24-27 (N.K.J.Version, bracketed notes added)