Sep 25, 2026Discover the origins of the calendar, from the Sumerians' lunar system to the Egyptians' solar calendar and their cultural significance.

Jul 28, 2026Discover the oldest known calendar, the Sumerian lunar-solar calendar from Mesopotamia dating back to 21st century BCE.

Jan 7, 2026Discover the fascinating history of the seven-day week and the naming of days from Monday to Sunday, rooted in ancient Mesopotamia.