Space Birthday

Do you know how many Mars years old you are?


News flash! My Times Tables Board Game is now on KickStarter! See how you can reserve your copy by visiting the KickStarter page now!

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!

Isaac Asimov's Birthdays

Isaac Asimov was a science fiction author famous for his Robots and Foundation series of stories. Links: Amazon, Wikipedia, Other Celebrity Space Birthdays

 Isaac Asimov turns 416 Mercury years old on the 12th March, 2020.
 Isaac Asimov turns 163 Venus years old on the 12th April, 2020.
 Isaac Asimov turns 100 Earth years old on the 2nd January, 2021.
 Isaac Asimov turns 54 Mars years old on the 26th July, 2021.
 Isaac Asimov turns 9 Jupiter years old on the 26th September, 2026.
 Isaac Asimov turns 4 Saturn years old on the 31st October, 2037.
 Isaac Asimov turns 1 Neptune year old on the 17th October, 2084.
 Isaac Asimov turns 2 Uranus years old on the 25th August, 2088.

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