Origin - Proposed Name Name Day
At that time, the only division of time is the moon, and there are too many days in a month to be named individually. But when humans began to build cities, they want to have a special day to trade, a market day. Sometimes the days the market is set every tenth day, sometimes every day of the seventh or every fifth day The Babylonians decided on the market should fall on the seventh day. On this day they do not work, but met to trade and conduct religious ceremonies.