Days of the Week

(redirected from Day of week)
Also found in: Legal, Acronyms.

Days of the Week

(religion, spiritualism, and occult)

In ancient times, astrology was a universal language or symbolic code that was applied to the interpretation of every imaginable phenomenon. As far back as Roman times, the days of the week were correlated with the traditional planets (the Sun, the Moon, and the five planets visible to the naked eye): Monday was thought to be ruled by the Moon (“moonday”), Tuesday by Mars, Wednesday by Mercury, Thursday by Jupiter, Friday by Venus, Saturday by Saturn (“saturnday”), and Sunday by the Sun (“sunday”). These days were regarded as lucky for people ruled by the corresponding planets (e.g., Monday was regarded as lucky for Cancer, the sign ruled by the Moon), and an activity ruled by a particular planet was said to be enhanced when carried out on a day ruled by the same planet (e.g., Mercury-ruled Wednesday was good for writing and sending letters—activities ruled by the planet Mercury). Weeks, unlike months and years, appear to be unnatural periods not correlated with any natural phenomenon; but, in fact, weeks are based on subdivisions of the lunar cycle in quarters: new moon, first quarter, full moon, and last quarter. While modern astrologers are aware of these rulerships, they are rarely utilized for practical astrological purposes.


Hall, Manly P. Astrological Keywords. New York: Philosophical Library, 1958. Reprint, Totowa, NJ: Littlefield, Adams, 1975.
Rasmussen, Steven C. “Secrets of the Seven-Day Week.” The Mountain Astrologer 292 (February/March 1992): 3–6.
The Astrology Book, Second Edition © 2003 Visible Ink Press®. All rights reserved.