Shop 4 Calendars
Days in a Month
Give a Calendar
Julian & Gregorian Calendars
Names of Days
Names of Months
Names of Days
The ancient Roman Republic based their calendar on 8-day cycles (known as "nundinal cycles"), based on a 8-day cycle of bringing goods to market, however between the 1st and 3rd centuries AD, the Romans gradually switched to 7-day weeks. By the 4th century, this system had completely replaced the older system, and had even spread to India and China.
The Romans named the days of their 7-day week after the planets of ancient Greek astrology: Sun (Sol), Moon (Luna), Mars (Ares), Mercury (Hermes), Jupiter (Zeus), Venus (Aphrodite) and Saturn (Cronos).
The names of the days of the week in most modern European languages (especially Romance languages which directly derive from the ancient Roman's language, Latin) are based on the Roman names - although, with the arrival of Christianity, in most languages the Sun's day (Sunday) became the "Day of the Lord" ("dimanche" in French, or "domenica" in Italian), and Saturn's Day (Saturday) was renamed after the Sabbath ("samedi" in French, or "sabato" in Italian).
The English names of the days of the week are a little unusual in that they combine their original Roman associations with Germanic/Norse paganism - in several cases the Germanic/Norse diety's names appears in place of a similar Greco-Roman diety.
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