The origin of the Gregorian calendar Julian calendar (Julian Calendar) calendar we use today, 12 months a year, average year 365 Vincent calendar calendar printing system, leap years 366 days. This calendar is a solar calendar business calendar calendars printed propaganda, dating back to 46 BC Julius Caesar's Roman calendar reform, Caesar adopted Naguluoma astronomer Sosigenes of Alexandria's proposal to set at 365 days a year, a leap year 366 days divided into 12 months a year, every four years plus one day for leap day, so you figure the average year is 365.25 days. Caesar's name is Julius Caesar (Julia Ceasar), so this calendar established by Julius Caesar called the Julian calendar (Julian Calendar). Gregorian calendar (Gregorian Calendar) Gregorian calendar, is the international calendar, the Gregorian calendar. AD October 15, 1582 by Pope enable Gregory XIII (Pope Gregory 13). Gregorian calendar is based on the Julian calendar calendar calendars printed on leap year is set to make some adjustments, according to the Julian calendar, every four hundred years, a hundred leap day, the Gregorian calendar will be one hundred leap Japan was reduced to ninety-seven. Gregory XIII This adjustment is made for religious reasons, in order to accurately calculate the day of Jesus' resurrection. Banking institutions calendar calendar printing, calendar printing calendars Anshun, high sea Hang Fai printing 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!