napolean
The Egyptians developed the first accurate calendar.
it was built in 1427
Egypt were the first ones to use the 365-day calendar
The first month of the Roman calendar, which is traditionally attributed to Romulus, was named March (Martius) in honor of Mars, the Roman god of war. This choice reflected the agricultural and military activities that typically began in spring. Later, with the reforms of the calendar, January and February were added, but March remained the first month in the original calendar.
Egypt
The Jewish calendar came first. It was created in 3760 B.C. while the Mayan calendar was created in 3372 B.C.
The Mayans
shang
the mayans created the first calendar
Obid created the 365 calendar
The Newgate Calendar was created in 1774.
Positivist calendar was created in 1849.
Darian calendar was created in 1985.
Kingfisher Calendar was created in 2003.
The Calendar of Nature was created in 1821.
Pirelli Calendar was created in 1964.
Premier Calendar was created in 1959.