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Calendar

 

Calendar Tool

Year To change the year, select the number displayed in the year window and type a new year, or use the << and >> buttons to change the year. Month Select a month from the drop down menu, or use the < and > buttons to change the month. Today's Date Click the Today button.   The calendar for the current month is displayed, and today's date is highlighted in yellow. tip   TIP: After you click any of the buttons << or >> or < or >, you can press the Enter key on the keyboard or keypad to continue changing the year or the month in the same direction. tip   TIP: After clicking one of the arrow buttons, press and hold the Enter key on the keyboard or keypad to quickly change the month and/or year in the same direction.
 

The History of Calendars

Gregorian Calendar This calendar tool is based on the Gregorian calendar, the calendar used by most of the modern world. The Gregorian calendar was decreed in 1582 CE by pope Gregory XIII, and immediately adopted in Italy, Spain, Portugal, France, the Netherlands, and in their territories and possessions. The Gregorian calendar was gradually adopted in various other countries during the following 340 years, with several adoptions taking place as late as the 20th century, including Albania, Latvia, Lithuania, Bulgaria, Russia, Estonia, Romania, Yugoslavia, the USSR, Greece, Turkey, and China. Julian Calendar Prior to 1582 CE, most of the Christian world was on the Julian calendar, introduced by Roman Emperor Julius Caesar in 46 BCE as a replacement for the Roman calendar. This tool shows accurate Gregorian dates.   The Gregorian calendar is based on the Julian calendar, but the two calendars do not generally agree, and conversion between them is non-trivial. About the Calendar Tool When building calendars for years prior to about 1600 CE (Common Era, AD, or Anno Domini), check your dates to make sure they are Gregorian, and not based on some other calendar, such as the Julian. Historical dates between 45 BCE and 1582 CE, are likely Julian dates, not Gregorian. Dates shown on this Gregorian calendar tool generally will not match Julian dates.
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