Like anyone knows that?!
The Romans actually invented concrete! We still use that today. They also invented roads. The Roman people invented the making of wine and how to do it. Romans had and used libraries and the building design of Roman buildings are still in use today.
The Bible covers a long period, several thousand years. Different calendars will have been used, and different people use different calendars anyway.
My calendar is a Gregorian calendar
they had 90000000000000000 billion calendars minus 123151671237234 squared.
Ancient Egyptians invented many things that are still used today, including makeup, hair removal techniques, and calendars. They also invented plows and toothpaste.
Like anyone knows that?!
Many countries invented and used solar calendars, because it was one of the most apparent observable incidents in daily life. They became almost universal in one form or another. Modifications were introduced such as lunar calendars and joint solar/lunar calendars.
The Maya - they invented it.
The same way we do today. Our calender comes to us from Julius Cesar and the month of August is named for him.
1931
They didn't, calendars are still being made today. Source: My mailbox is full of them.
The Olmecs used 3 calendars.
Ancient Hindus generally made use of lunar calendars and solar calendars.
The Romans actually invented concrete! We still use that today. They also invented roads. The Roman people invented the making of wine and how to do it. Romans had and used libraries and the building design of Roman buildings are still in use today.
The Lydians are credited with inventing coin currency, which is still widely used today as a form of money and exchange. This innovation revolutionized trade and economics.
CHANGE In temperature climate time