Jubilee Years Calendar. The newly discovered leap year pattern of the jubilee calendar produced minor adjustments resulting in new witnesses of the scriptures. In 7th year, crops were not sown or reaped.

The jubilee is a holy year for the catholic community that occurs once every 25 years (generally, sometimes the pope declares a special one like in 2016). The fiftieth year, i.e., that following the last year of seven sabbatical cycles, is the jubilee;