The Mayan civilization!
Obid created the 365 calendar
The incans
The Julian Calendar was created by Julius Caesar. It was introduced in 46 BC. The calendar began to be used on January 1, 45 BC, and was used until replaced with the Gregorian Calendar in 1582.
Rome, I believe.
In the bigining the The Prophet Enoch (Henok) calendars were used until Julian calendar took over it and then Gregorian calendar emerged at the year of 16 century.
The Mayan civilization!
The Ancient Mayan Civilization calendar.
The Maya civilization created an accurate calendar between A.D. 300 and A.D. 900. The Maya calendar was highly advanced and consisted of several interlocking calendars that helped them track time accurately and predict astronomical events. It was based on their extensive knowledge of mathematics, astronomy, and astrology.
I think the answer could be 'The Nile Valley' Civilization.
jul25,424bc
1yr=365day 2yr=730day
The Mayans.
The Mayan calendar was created during the time of the ancient Maya civilization, with different components developed at different periods. The Long Count calendar, for example, originated around the 5th century BCE.
The Newgate Calendar was created in 1774.
Positivist calendar was created in 1849.
Kingfisher Calendar was created in 2003.
Country Calendar was created in 1966.