Did Mesopotamia Invent The 12 Month Calendar?

Did Mesopotamia Invent The 12 Month Calendar? The lunisolar calendar, in which months are lunar but years are solar—that is, are brought into line with the course of the Sun—was used in the early civilizations of the whole Middle East, except Egypt, and in Greece. The formula was probably invented in Mesopotamia in the 3rd

Why Do Greek Orthodox Celebrate Christmas On December 25?

Why Do Greek Orthodox Celebrate Christmas On December 25? Christmas falls on a different day in the Orthodox Church because they still observe the traditional Julian calendar, which has the original dates for Christian celebrations before the Gregorian calendar was introduced. This means that, technically, Orthodox churches still observe Christmas on December 25. When did