Calculating the jubilees is easy. Remember the 70 weeks begin the 1st of Cyrus, a period of 490 years, which is 10 jubilee periods of 49 years each. The jubilee, which is the 50th year after 49 is celebrated on the 1st year of the next 49.
Based on that, if 455 BCE is a jubilee year, then we can easily calculate the jubilee years prior to this. Two jubilees prior dates a Jubilee in 553 BCE which falls in the 30th year of Josiah.
If you count 19 jubilees, 931 years, you get the Exodus occurring on a jubilee year in 1386 BCE. This is confirmed by 1947 which is also a jubilee year, the beginning of the 70th jubilee period of 49 years. That means 70 jubilees (3430 years) ends in 1996
3430 - 1996 = 1434 + 1 = 1435 BCE.
The Exodus would be the first celebrated jubilee in the 50th year after this, thus
1435 - 49 = 1386 BCE.
Thus the Exodus in 1386 BCE, the return from Babylon in 455 BCE and the final restoration from exile in 1947 AD all fall on the 1st year of a jubilee period of 49 years. The only other Biblical jubilee would be during the 15th year of Hezekiah in 651 BCE.
I wasn't able to reconcile any of the Talmudic jubilees provided by Leolaiae. But as noted, it is good to know the various references for comparison. Thanks Leolaia!
LS