Israel's 4th Great Jubilee Cycle is the 490 yrs of Daniel's 70 Weeks, 458BC - 33AD (9:24). The 70th Week (26-33) was the time of Messiah's Presentation to Israel (9:25) by John then Jesus. When she rejected Him, these 7 yrs were cancelled in order to be rerun as the Tribulation. So there's also a future 70th Week (9:27).