The Mr gazzi calendar
The Sumariens created the calendar that we use today.
No. The mayans made the calendar and this calendar is what we use today.
I can't see "this" calendar.
It is the Gregorian calendar which we use today
Gregorian
If you mean 365.25 days in a year then it was the Romans who introduced the calendar that we now use today.
The calendar we use today was made by the Romans under Julius Caesar, thus, it is called the Julian calendar.
The Gregorian calendar is the most widely used calendar system in the world today. It was introduced by Pope Gregory XIII in 1582 as a reform of the Julian calendar.
Some countries that use the lunar calendar include Saudi Arabia, Israel, China, South Korea, and Indonesia. The Islamic calendar is based on lunar cycles, while countries like China and Korea use a lunisolar calendar which incorporates both the lunar and solar cycles.
The Mayans, Egyptians, Babylonians, and Chinese all had calendars in the ancient days. The calendar we use to today was first developed by the Romans, under Julius Caesar (the Julian Calendar). That was modified by the Gregorian Calendar (named for Pope Gregory XIII), which we still use today
Julius Cesar
The calendar we use today, known as the Gregorian calendar, was introduced by Pope Gregory XIII in 1582. It reformed the earlier Julian calendar to correct inaccuracies in the calculation of leap years and the timing of the equinoxes. The Gregorian calendar is now the most widely used civil calendar around the world.