Time, Part Two (U.S. Navy)

The film discusses the concept of time zones, international date lines, and celestial navigation. It explains how the Earth is divided into 24 time zones, each 15 degrees wide, based on the 24-hour day and the Earth's 360-degree circumference. The film illustrates how time zones are designated by plus and minus in longitude, with each zone keeping time based on its central meridian. It also explains how crossing time zones affects the date, especially near the International Date Line. Additionally, it delves into celestial navigation, apparent vs. mean sun, and the equation of time in determining Greenwich hour angles. We digitized and uploaded this film from the A/V Geeks 16mm Archive. Email us at footage@avgeeks.com if you have questions about the footage and are interested in using it in your project.