The years just do not add up. I try to do the math between the CE and BCE and rectify it with the Hebrew calendar, but then I do other research and the numbers do not jive. I spent a lot of time trying to figure this out!
THEN, HaShem led me to an article about a Pope in about what would be 1500 CE who created the calendar we have today and pre-dated it back 1500 years.
Regardless, after some more research I found that many of the nations did not do so well with keeping calendars so if I find that dates just don’t seem to match up between the secular world’s account of history and the Jewish world all the time – they don’t and it’s not because anyone is trying to be dishonest, it may be that everyone was holding off different calendars.
I never realized what a challenge this had been throughout the millennium, but it definitely needs to be kept in mind that it is a real challenge that is there. So if you are trying to look up Nebuchadnezzar’s reign and who was King at the time in Israel – the dates may not be so accurate depending on the source you are looking at.
One this subject – note that the solar calendar we go by not only has a leap year, but also has a day added every hundred years or so. So back dating this kind of calendar….. I don’t think I have to say much more.