If you have Hulu, this is SO worth watching.
https://www.hulu.com/series/nostradamus-effect-554f5899-b2f2-4958-91cf-a1437569a9c3
Amazing series.
I decoded Nostradamus' dating some years ago; all of his dates are Julian dates - except the enigmatic 1999 of X-72.
Unfortunately Nostradamus used the date for the beginning of the Julian Calendar as 4713 BC; that date coincides with the calculation of Joseph Scaliger in 1582 (I suspect they had already agreed on this date; they knew each other.) It is said that Scaliger arbitrarily picked the year 4713 B.C. since it would include all the events then known in human history.
You can see from my calendar page that all the dates, including Biblical date calculations, fit nicely in to the Julian Calendar chronology except that the 4713 date does not work out as a starting date in current events in the modern calendar.
I have to say that I have found almost all of today's interpretation of Nostradamus almost completely incredible. Examining the original Old French quatrains {4-line verses} reveals that modern interpretations have combined numerous verses and lines to accomplish the desired result of the commentator. Many TV offerings, on the History Channel e.g., lack any sort of credibility, mostly due to the commentator's distortions.
Besides the Old French, Latin is credible as is Greek sometimes.
I took the approach of translating much of the quatrains into Hebrew, admittedly sometimes loosely, in order to explain some of the seer's enigmatic words AND some of his repeated themes. I fear the effort - much of it posted on my web site - is difficult to understand, although Hebrew academics have agreed it is interesting in light of much of what was going on in the European Renaissance Kabbalistic and alchemistic writing.
In other words, I think Nostradamus was a Jewish mystic who converted to Christianity - perhaps because earlier his family had little choice in order to escape deportation or prosecution.