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How Many Days?

How many days are there between February 25th 2000 and March 11th?

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On What Day Did it Happen?

Read this article to find out the mathematical method for working out what day of the week each particular date fell on back as far as 1700.

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Calendars

Calendars were one of the earliest calculating devices developed by civilizations. Find out about the Mayan calendar in this article.

Planet Plex Time

Stage: 1 Challenge Level: Challenge Level:1
Can you see on the clock what time school starts?
Could you use the clock to count how many hours have passed?