> ## Content Index
> Fetch the complete content index at: https://www.cascadepbs.org/llms.txt
> Use this file to discover other available public pages before exploring further.

# Why Are There 7 Days In a Week? Explained
- URL: https://www.cascadepbs.org/show/its-okay-be-smart/episode/why-are-there-7-days-in-a-week-explained-rfhdq0/
- Published: 2024-04-02T23:16:44.000Z
- Updated: 2025-08-20T09:54:43.000Z
- Description: Here’s the true story of one of the oldest human customs still in use today.
- Author: Cascade PBS Staff
- Tags: Be Smart, Season 8, Episode 22, #ZZZ_Episode_e95e3ff0-08fe-4575-9d36-62aacbcc8d4d, #episode, #ZZZ_Show_dc38a6e9-266e-43c1-b647-45e7445fad27, #v1.16

Why does everyone use a 7 day week, and where did it come from? Where do the names of the days come from? And who can we blame for Mondays? Here’s the true story of one of the oldest human customs still in use today. It gets a little weird.