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!

William Herschel's Birthdays

William Herschel was an astronomer who discovered the planet Uranus, the first new planet discovered since ancient times.. Links: Amazon, Wikipedia, Other Celebrity Space Birthdays

 William Herschel turns 1187 Mercury years old on the 5th October, 2024.
 William Herschel turns 152 Mars years old on the 6th October, 2024.
 William Herschel turns 286 Earth years old on the 15th November, 2024.
 William Herschel turns 465 Venus years old on the 11th December, 2024.
 William Herschel turns 10 Saturn years old on the 13th June, 2033.
 William Herschel turns 25 Jupiter years old on the 11th May, 2035.
 William Herschel turns 2 Neptune years old on the 17th June, 2068.
 William Herschel turns 4 Uranus years old on the 3rd March, 2076.