If you mean the calandar that contains January February etc, it is the Gregorian Calandar, named after Pope Gregory XIII.
International Fixed Calendar League was created in 1922.
international dateline
The Aztecs were known for their vast understanding of numbers and for contributing a calendar.
The International Six Days Enduro (ISDE), formerly known as the International Six Days Trial (ISDT), is the oldest 'off road' motorcycle event on the FIM Calendar. The ISDT was first held in 1913 at Carlisle, England.
A dockett.
The International dateline.
if you travel east across the international dateline your calendar would be moved back a day.If you traveled west, you would move your calendar a day ahead.Weird, huh?
You can find an easy to use, printable timeshare calendar for 2011 here see link below.
The international date line in the Pacific Ocean.
The first known calendar system used in the Philippines was the ancient Tagalog calendar, known as the "Pasio" or "Pasigua." It was a lunar calendar based on the phases of the moon and was used by various ethnic groups in the archipelago before the arrival of the Spanish.
Julius Caesar introduced what is known as the Julian calendar in 45 BC.
The name of the person that invented the first calendar is not known. The first calendar was invented in Scotland.