Eight-day week Eight-day week Some historical calendars had "weeks" of eight days. In the Burmese version of Theravada Buddhism, the week has eight days. Wednesday is divided into Wednesday proper (midnight to noon) and Rahu (noon to midnight). Each day is associated with a compass direction, a planet, and a totem animal. The ancient Etruscans developed an eight-day market week known as the nundinum around the 8th or 7th century BC. This was passed on to the Romans no later than the 6th century BC. As Rome expanded, it encountered the seven-day week and for a time attempted to include both. The
Names of the days of the week - see понедельник Thing (Assembly), of which god Tyr/Ziu was the patron. Mid-week "or" Middle The day between two fasts "(An Dé idir dhá aoin, contracted to An Déardaoin)" (Christianity) The Fast or Fasting Day (Christianity) Good Friday or Preparation (Christianity) "Shabbat" (Jewish Sabbath) Names of the days of the week The names of the days of the week in many languages are derived from the names of the classical planets in Hellenistic astrology, which were in turn named after contemporary deities, a system introduced by the Roman Empire during Late Antiquity. In some other languages, the days are named