NOTE: You can also write dates before Christ, by using negative numbers, as the following examples:

1 b.C. = 0; 2 b.C. = -1; 44 b.C. = -43; etc. The result could be not exact for periods before 15 A.D., and surely not exact for periods before the Julian reform of 46 b.C.

I got the algorithm from the function to calculate the Julian number offered by Claus Tondering in his web site (par. 2.15.1).

The calendar | Versione italiana |

Author: Eugenio Songia

Copy allowed for non-commercial use, with the citation of the author or the website

Privacy policy

Creation date: 5/5/2007. Last update: 1/5/2016