Hebrew calendar
In the Hebrew calendar, every seventh day is Shabbat, the day of rest. The week is the cycle of counting out each set of seven days ending in Shabbat. The week is not affected by any other calendar calculation. In Hebrew, the only name for the first six days of the week is a counting name: "First day", "Second day", etc. The only day of the week with a special name is the seventh day—Shabbat. (See table above.)