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The historical roots go deeper. The ancients viewed the sky differently, identifying any body moving against the backdrop of fixed stars as a planet. As a result, everyone's perception of celestial bodies was based solely on movement. The number of recognized planets fluctuated throughout history, but seven emerged as particularly significant. This number formed the basis for many cultural and religious traditions, perhaps most notably the seven days of the week.
Days of the Week: A Planetary Legacy
As the conversation drifted to the etymology of weekdays, it became clear that each day carries the name of one of these seven celestial bodies.
Sunday: Named for the Sun.
Monday: Derived from “moonday,” a nod to the Moon.