165
164 earth years
Neptune takes about 165 Earth years.
One year on Neptune is 164.79 earth years. So, a decade would be ten times as much, or 1647.9 earth years.
Neptune are 164.79 years compared to earth
165 earth years.
Nobody actually knows how long it took for Neptune to form because it is so far away. We can not take samples to test how old the rocks are either because our equipmen can't make it through the methane atmosphere.
One year on Neptune is 165 years on Earth.
It takes Uranus 84.01 earth years. Neptune 164.80. And Pluto 248.00 years.
It takes Neptune around 165 years to complete one orbit around the sun.
165 (Earth) years.
2.5 months. Collusion is set for Earth on 7/21/12
Neptune's year, or the time it takes to orbit around the sun, is a little under 165 of our Earth years.