Mercury's days are equal to about 176 Earth days.

Mercury is the innermost and smallest planet in the Solar System, orbiting the Sun once every 88 Earth days. Due to the speed of its orbit, Mercury has longer days than years! A single day on Mercury is equal to two years on Mercury. It is equal to about 176 Earth days.

Mercury is normally lost in the glare of the Sun. You can see it, however, during a solar eclipse.

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