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Spaceship Earth: Season 1

1x09 Week 9: The Calendar (Late February)

  • 1997-05-17T22:00:00Z on France 5
  • 5m
  • France
  • French
  • Documentary
Leap Days: The Earth misses a quarter of a day. Gregorian and Orthodox calendars. Solar and lunar calendars. Solid and gaseous planets.
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