I thought maybe you were confusing 3 score and 2 weeks with 3-1/2 years. A score is 20 years. So 3 score is 60, and 3 score and 2 is 62.
Just and fyi, if you made that mistake.
Da:9:24: Seventy weeks are determined upon thy people and upon thy holy city, to finish the transgression, and to make an end of sins, and to make reconciliation for iniquity, and to bring in everlasting righteousness, and to seal up the vision and prophecy, and to anoint the most Holy.
Da:9:25: Know therefore and understand, that from the going forth of the commandment to restore and to build Jerusalem unto the Messiah the Prince shall be seven weeks, and threescore and two weeks: (a total of 69 weeks) the street shall be built again, and the wall, even in troublous times. Da:9:26: And after threescore and two weeks shall Messiah be cut off, but not for himself: and the people of the prince that shall come shall destroy the city and the sanctuary; and the end thereof shall be with a flood, and unto the end of the war desolations are determined. Da:9:27: And he (Jesus) shall confirm the covenant with many (Jews) for one week: and in the midst of the week(3.5 years) he shall cause the sacrifice and the oblation to cease,(temple sacrife not needed after the crusifiction) and for the overspreading of abominations he shall make it desolate,t (God gave the Jews 40 years to repent for the continuation of the sacrifice) even until the consummation, and that determined shall be poured upon the desolate.