Rockislandbooks yt channel gives compelling evidence it starts this year October 5th 2022 and that it's the 70th jubilee. If you're willing to take new information into consideration, I highly recommend checking it out. The title is Jubilee 2022? Whiteboard animation (with bonus content).
When calculating the Jubilee years, add 49 years to the last Jubilee year, not 50. Remember, the Jubilee is the 50th year(first year of the next 49 year cycle), not 50 years from the last Jubilee year.
There’s always a problem calculating exact dates. The birth of Jesus is from 6 to 3 BC. Therefore Luke 3:23 says Jesus was 30 years old when he started his ministry on the Jubilee of Luke 4:19 which would be a date 24-27AD adding 2000 year gives a date of 2024-2027 40 jubilees counting 50 years. if you use 49 years, the 40 jubilees would be 1960 which would be way off even for CJ - Rock Island. Daniels 69 weeks also this is another calculation from a crucifixion which is 480 years -crucifixion was 30-33 AD which the Jews left Babylon about 450BC which is about nine jubilees.
Cecil, when calculating from 27AD using 49 years your post says that it comes to 1960 for the 40th Jubilee. I think you forgot to add in the 27 years from the start date. 49x40=1960 + 27 = 1987