Measuring time: Calendars and clocks

Duration: 14

Year Published: 1984

Format: 16mm

Description: Noting that early time-telling was based on observations of seasons and recurring celestial cycles, animated sequences show how days, years and months are determined by the sun and moon, and how these periods of time, plus the week, are organized into calendar years that keep step with the seasons.

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Indiana University Library Moving Image Archive

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