1 дек 4000 г. до нашей эры - Egyptians Create First Calendar Based on the Sun
Описание:
An Egyptian calendar is also known as a solar calendar. One year had three seasons. Each season had 120 days in it.
The Egyptian calendar lost a day every 4 years because of another calendar.
Добавлено на ленту времени:
Four Empires Mesopotamia
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