The date 34 c.e. for the Passion of our Lord is proved by the biblical calendar of feasts.  For it is clear that he died on the preparation day to the Passover (John 19:14), which was always the 14th day of the biblical month of Aviv (Exodus 12:1-6).  The new moon of Aviv is always the first visible crescent of the moon nearest to the spring equinox.  Thus, we can calculate the day of the week that the 14th of Aviv fell on for all years.  Since, we know that Yayshua died on Wednesday, we can eliminate all the years in which the 14th of Aviv did not fall on Wednesday.  When this is done, 34 c.e. is the only year that is left.  The range of years considered by scholars is 26 c.e. to 36 c.e. 
         A summary of the data is below. The links lead to the full calendar and astronomical tables. 
          26                  Sabbath  (14th Aviv begins preceeding day at sunset) 
          27                  Thursday  
          28                  Tuesday 
          29                  Monday 
          30                  Friday 
          31                  Tuesday 
          32                  Monday 
          33                  Friday 
          34                  Wednesday 
          35                  Tuesday 
          36                  Sabbath                                  Back