quarter days

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What is Leap Day?

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Leap Day, February 29

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Vietnam War Timeline

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Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution

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quarter days: Media

calendar

Videos

What is Leap Day?

What is Leap Day?

An extra day is added to the calendar about every four years. Why?

Video: Encyclopædia Britannica, Inc.

VIEW MORE in these related Britannica articles: