2989: Starting the Week with the Sun Feb 26, 2025

The Ancient Babylonians were very advanced in mathematics, astrology and so on, and it is this week that was adopted by other peoples like the Greeks, Romans, and later Germanic peoples, replacing the Latin 8-day week etc.. They named the days of the week after the 7 luminaries (celestial bodies) known to them, and in particular they named them after those which appeared largest to smallest to the naked eye: the Sun (of Sunday fame), the Moon (on Monday), Mars, Venus, Mercury, Saturn, and Jupiter. In most Romance languages, the word for Sunday comes from the Late Latin diēs Dominicus (literally “day of the Lord”), like Spanish, Sunday is instead domingo, or French ‘dimanche’.