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I think the egyptians invented them because they used hieroglphics on calenders. I'm guessing they did.
What else can I help you with?
What are some things Egypt invented?
They invented the first form of currency and the calender. They were known to have invented math.
Did the mayans do arts and crafts?
They did because they had invented their very own calender
How sumerians keep time?
They invented a calender based on the moons and stars
Ancient babylonian inventions?
They invented Beer, Algebra, Astronomy, and an accurate calender.
Who invented the mayans?
Ancient MayansThe ancient Mayans created The Mayan calender .
What is babylonia known for?
they were known for there incredible astronomy and the accurate calender they also invented a form of math
Did the sumerians create the sundial?
Yes they invented the twelve month calender.
What civilisation invented calendars?
They Mayan civilization did. That's why everyone is freaking out about 2012...that's when they stopped continuing their calender.
What year were sun-moon roofs invented?
it has been invented in 566 bc means before calender just in case u don't know than u
What did the mathematician Zhang Heng do?
Zhang Heng invented the first seismograph and also remade the calender so that the seasons were aligned.
What was the Sumerian clock called?
They invented a calender based on the moons and stars
Who invented that 365 days are in a year?
Julius Caesar made calender in 46 BC. But modified by Christians 1582. Hope this helps.
