Why are there 7 days in a week?

The Moon and Sun are famous for being major players in the formation of ancient and modern calendars. Let's learn why months are months and weeks are weeks.

Here's that great resource about the Roman Calendar I mentioned, to learn why the Romans had a string of centuries that became known as the "Years of Confusion":

A list of all the Blue Moons happening in the next several years:

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100% of this video was produced and filmed using solar energy

[carlagoncalves]

I can't even believe that you only got 21 likes. This is a very good and clear video to explain this complex subject. Hold on there! youtube algorithm will eventually find you!

[michaeldibenedetto]

wonderful job, thank you for the education, you are a great teacher

[rnjhybq]

You are correct.
Perfect video.
Hope others will learn from you
Now here are some questions to you too:
Where did the second come from?
Why we count 60 seconds and 60 minutes?
Hint: we also count 360 degrees for a circle.
And last:
Where did the weight of gram came from.
Hope to see more of your videos
Great respect

[vegahimsa]

The Babylonians did NOT have a seven day week. They had 29 and 30 day months with feasts on the 7th, 15th, sometimes 22, and new moon on the 29th or 30th (aka 1st of next month).

In the fifth tablet of the Babylonian Epic of Creation En‚ma Eli·, the god Marduk, having created the universe from the corpse of Tiamat, assigns the sun, moon and stars their places in the heavens. In lines 12–22 Marduk made Nannaru (the moon) appear and entrusted to him the night. He designated him as the night’s adornment, to define the days. Every month without ceasing he exalted with a crown. “To light up over the land at the beginning of the month, you shine with horns to define six days and on the seventh day a half crown! Be in opposition on the fifteenth day, every half month! When ∞ama· (the sun) gazes at you from across the horizon, diminish and recede apace! On the day of dis-appearance, approach the path of ∞ama·! ... on the thirtieth day be in conjunction and rival ∞ama·!”