The earliest calendars were carvings on bone 11,000 years ago, followed by the lunar calendar which had twelve months 2,000 B.C.E., Egyptian solar calendar which had 365 days, the Mayan calendar which is based on the sun and the planet venus. The Gregorian calendar is based on the birth of...
The earliest calendars were carvings on bone 11,000 years ago, followed by the lunar calendar which had twelve months 2,000 B.C.E., Egyptian solar calendar which had 365 days, the Mayan calendar which is based on the sun and the planet venus. The Gregorian calendar is based on the birth of...