Space Birthday

Do you know how many Mars years old you are?


If you were born on Mars, how old would you be today? Or how many times has Jupiter gone around the sun since you were born? What's your age in Venusian years? This page can tell you! Enter your and your friends' birthdays using the form below. The information will only be stored on this computer, not on the server, so don't worry! (PS - I also have some printable space birthday worksheets you can download if you want to do these calculations yourself.)

  • Your/your friend's name:
  • Your/your friend's birthday:
You need to enter the year correctly - your Jupiter birthday doesn't fall on the same day each year, in fact most years you don't even have one!

Carl Sagan's Birthdays

Carl Sagan's writings have been incredibly inspirational in mankind's reach towards the planets and stars. Links: Amazon, Wikipedia, Official Site, Other Celebrity Space Birthdays

 Carl Sagan turns 3 Saturn years old on the 25th March, 2023.
 Carl Sagan turns 367 Mercury years old on the 1st April, 2023.
 Carl Sagan turns 47 Mars years old on the 4th April, 2023.
 Carl Sagan turns 144 Venus years old on the 12th June, 2023.
 Carl Sagan turns 89 Earth years old on the 9th November, 2023.
 Carl Sagan turns 8 Jupiter years old on the 24th September, 2029.
 Carl Sagan turns 1 Neptune year old on the 25th August, 2099.
 Carl Sagan turns 2 Uranus years old on the 4th July, 2103.

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