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Your Age on another Planet

The planets in the Solar System spin and orbit at different speeds, so their days and years are all different lengths. The following tool allows you to calculate what your age would be on another planet.

Mercury Venus Mars Jupiter Saturn Uranus Neptune
Type your date of birth in below, and then click on a planet

Your Date of Birth: (as Day/Month/Year)

/ /

You are:
Earth days old and Earth years old

This makes you:
Planet days old and Planet years old


Do you want to know how to work this out for yourself? Click here.


Please note that over the weekend of the 26-29th May 2017 we will be switching over to our brand new website - during this time there may be periods where the site is difficult to access, and users will be unable to request observations from the telescope. Please bear with us during this time. All should be back up and running by the 30th May 2017.