Wern Central

Planet Mercury's "day"

Published on Sep 18, 2014

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If you know that 1 Mercury day is 58 Earth days, and 1 Mercury year is 88 Earth days, you may think that if you can stay on Mercury, you would be able to see a full sunrise and sunset within 58 Earth days right? Well yes, but actually no. The difference between sunrise and sunrise in Mercury takes a longer time than its year, that’s around 176 Earth days! Why? Take a look at the picture below… (sorry for the terrible quality)

Mercury's day orbit path

So if you are standing at that position above, you may need to wait from the Mercury position 1 to Mercury position 1 again to see another sunrise.