When the first year of the establishment of a new calendar year in Caesar 2016 calendar printing, yet Jesus Christ to undertake the business calendar printing, so that time's reign and is now is different, the Roman city of dating. Now the calendar year the first year of the establishment is beginning in 525 AD by the Roman Emperor East Dior (Dionysius Exiguus), Dior order to facilitate the calculation of the Day of Resurrection of Jesus, then Jesus was born that year as the year the first year. In English, said the calendar printed by AD, AD comes from the medieval Latin Anno Domini professional calendar printing, its meaning is "the Lord's Birth." Prior year the first year, with BC, said, meaning "before Jesus" (Before Christ). Because in fact a return to year 365.24219 days, the Julian calendar to the year 1582 has racked up ten errors (more than ten days, or slow compared with the actual season ten days.) So Gregory XIII ordered By AD October 4, 1582 (Julian calendar) day for Year 15 October 1582 (Gregorian calendar) weeks to maintain a continuous unchanged. Professional Calendar Printing | Zigong calendar printing | printing high sea Fai provided by Foshan Nanhai Jinsha high sea Fai printing. Nanhai District of Foshan City, Hoi Fai Sands high printing (www.fs-henghui.com) strong, credible, in Foshan, Guangdong province calendar, calendars, greeting cards and other industries has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the high sea Fai printing and you hand into the brilliant, for a better future!