But Why?: Why Do Days Start At 12 O'Clock?

How was time created?

How did one minute become 60 seconds and one hour became 60 minutes? Why is time segmented into 12-hour periods? How do clocks work? Why is a year 365 days? Why is there an extra day in February every four years? Does time have a beginning or an end? Is time travel possible? Answers to all of your time questions with Andrew Novick of NIST, the National Institute of Standards and Technology.

 

But Why is a show led by you, kids!

You ask the questions and we find the answers. It’s a big interesting world out there. On But Why, we tackle topics large and small, about nature, words, even the end of the world.


Science Topics
Time
Social Studies Topics
Ancient History
K-6, Middle School
4th Grade, 5th Grade, 6th Grade, 7th Grade, 8th Grade

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