The seven-day week spread from Babylonian and Hellenistic astrologers, who assigned each day to one of the seven visible wanderers: Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn. Latin named them dies Solis, Lunae, Martis, Mercurii, Iovis, Veneris, Saturni. English kept the frame and swapped four deities: Tiw for Mars (Tuesday), Woden for Mercury, Thor for Jupiter, Freya for Venus. Only Saturday survived untranslated, still Saturn's day, the Roman god of time and harvest hiding in your weekend.
Esoteric readers, from Maxwell to Bonacci, note that the week distributes worship across the whole pantheon, and that Sunday worship, Saturday Sabbath, and Friday's Islamic prayer divide the planets among the faiths like territory.
The decoder claim: the seven-day week survived every empire, conversion, and calendar reform because it encodes the seven classical planets in liturgical order, a hidden astrology embedded in everyone's schedule. Saturday still belongs to Saturn, Sunday to the sun, Monday to the moon.
If the week is a Babylonian star-religion fossil that outlived its gods, what else in your routine is liturgy without a congregation?