Summary of Why Are There 7 Days In a Week? EXPLAINED

00:00:00 - 00:15:00

The seven day week is a result of ancient sky watchers' attempts to order the planets according to their speed of movement. The week originally spilled into the following day each day, moving four planets down the list. Eventually, the astrological system became based on the order of the planets as they are currently understood, with each day named for its first hour. The number seven is significant because it corresponds to the cycle of the moon and is also the number of days in a month.

• 00:00:00 The seven day week is a result of ancient sky watchers' attempts to order the planets according to their speed of movement. The week originally spilled into the following day each day, moving four planets down the list. Eventually, the astrological system became based on the order of the planets as they are currently understood, with each day named for its first hour.
• 00:05:00 The seven day week was first adopted by the Romans, and then spread to other parts of Europe and Asia. The number seven is significant because it corresponds to the cycle of the moon and is also the number of days in a month.
• 00:10:00 The seven days in a week originated from ancient Babylonian and Sumerian mathematicians, who noticed that there were a pattern of stars that could be seen within the constellation Ursa Major. They used this pattern to create a repeating decimal fraction. This fraction is infinite, which helped give birth to the mystical and superstitious nature of the number seven. Today, more than four thousand years later, the number seven is still associated with luck and superstition.
• 00:15:00 The author of the video explains why there are seven days in a week, and why the number seven is important.