This resource, from Twig World, looks at time zones around the planet and how these changes affect people.
The key points made in the film are:
•There are 24 time zones, which are regions on Earth that are bound by longitudinal lines.
•Local time depends on what time zone you are in.
•The system of Greenwich Mean Time was established in 1884, and by 1929 most countries had aligned their clocks accordingly.
•At any given moment, the time will be different in different places in the world.
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