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Day of the week set aside for worship and observance of religious duties in Judaism and Christianity. The Jewish Sabbath begins at sunset on Friday and lasts until sunset the next day, during which time no ordinary work or act of labor is performed. For most Christian denominations, the Sabbath is on Sunday; prescribed conduct varies considerably, but attendance at worship services is a feature common to all. In Islam, Friday is the day of worship.
This entry comes from Encyclopædia Britannica Concise. For the full entry on Sabbath, visit Britannica.com.