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Geography

The Role of the International Date Line in Timekeeping

Quick fact

The International Date Line is not a straight line; it zigzags to keep islands and countries within a single day. For example, Samoa and American Samoa, only a short distance apart, are on opposite sides of the line, causing a 24-hour time difference for the same moment.

Why this is interesting

Have you ever wondered why crossing the Pacific Ocean by plane can make you 'lose' or 'gain' a day? The International Date Line is the invisible boundary that makes this happen.