Originally posted by Gixer
The year 1999 in Nostradamous time (Georgian Calander) is September 2001.
Michel de Nostredame was born on December 14, 1503 in St. Remi, France.
The Gregorian Calendar introduced in 1582 by Pope Gregory XIII, altered the year by omitting 10 days to bring in to sync astronomical observances. The Julian calander did not figure leap years correctly and was slowly shifting observances. The Gregorian also shifted the first of the year to January whereas it had hitherto commenced on March 25th.
Any date between January 1st and March 25th might be reckoned in either of two years, 1582 or 1583, according to the style of reckoning adopted, civil or ecclesiastical.
Outside of these three months, the difference is only 10 to 12 days not two years.