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!

Galileo Galilei's Birthdays

Galileo brought astronomy many leaps forward with his discoveries, including the discovery of the moons of Jupiter. Links: Amazon, Wikipedia, Other Celebrity Space Birthdays

 Galileo Galilei turns 459 Earth years old on the 15th February, 2024.
 Galileo Galilei turns 1910 Mercury years old on the 24th February, 2024.
 Galileo Galilei turns 748 Venus years old on the 19th April, 2024.
 Galileo Galilei turns 245 Mars years old on the 7th December, 2024.
 Galileo Galilei turns 39 Jupiter years old on the 22nd August, 2026.
 Galileo Galilei turns 16 Saturn years old on the 13th June, 2035.
 Galileo Galilei turns 3 Neptune years old on the 4th July, 2058.
 Galileo Galilei turns 6 Uranus years old on the 26th January, 2070.

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