THE INTERNATIONAL DATE LINE: Where Your Movement Determines If You Gain or Lose a Day

In 1519, the Portugese explorer, Ferdinand Magellan along with 241 men set out to travel around the Earth. These men kept very careful records as they travelled. Yet, when they returned back, they found that their calendars were off by one day compared with the calendars of everyone in their home countries (Spain and Portugal). […]

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