3. Origins of the names of week
• The days were named after the planets of Hellenistic astrology,
in the order: Sun (Helios), Moon (Selene), Mars (Ares), Mercury
(Hermes), Jupiter (Zeus), Venus (Aphrodite), and Saturn
(Cronos).
• Between the 1st and 3rd centuries, the Roman Empire gradually
replaced the eight-day Roman nundinal cycle with the seven-day
week. The earliest evidence for this new system is a Pompeiian
graffito referring to 6 February (viii idus Februarius) of the year AD 60
as dies solis ("Sunday").[1] Another early witness is a reference to a
lost treatise by Plutarch, written in about AD 100, which addressed
the question of: "Why are the days named after the planets reckoned
in a different order from the 'actual' order?".[2] (The treatise is lost,
but the answer to the question is known; see planetary hours).
4. Where was the reference of Sunday?
• Acts 20:7 “Now on the first day of the week, when the disciples
came together to break bread, Paul, ready to depart the next
day, spoke to them and continued his message until midnight”
and Paul indicated the Lord's day
5. How did the Jews a day
• Based on the classic rabbinic interpretation of Genesis 1:5 ("There
was evening and there was morning, one day"), a day in the rabbinic
Hebrew calendar runs from sunset (the start of "the evening") to the
next sunset.
• The Hebrew names of the days of the week are numerical: Sunday -
Yom rishon- "first day", Monday -Yom shani- "second day", Tuesday -
Yom shlishi- "third day", Wednesday -Yom reveci- "fourth day",
Thursday -Yom khamshi- "fifth day", Friday -Yom shishi- "sixth day"
and cErev shabbat -"eve of Sabbath", Saturday -Yom ha-