Explores evidence about different uses of time-measurement in the Dead Sea Scrolls, the Hebrew Bible, and other ancient Jewish texts. Examines texts, their sources, and the different uses to which people put calendrical information in the world of Judaism and Christianity. Argues that the scrolls indicate that a dispute about the correct calendar for dating festivals was one of the principal reasons for the scrolls' author's separation from the rest of Jewish society. Annotation c. Book News, Inc., Portland, OR (booknews.com)