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I'm afraid the question is probably "wrong".

It probably means "days longer than years". The following answers are based on that assumption.

The are 2 definitions of day involved here.

"Sidereal day" is the rotation period of a planet.

"Solar day" is the day based on the position of the Sun in the sky, and depends on a planet's orbit as well as its rotation period.

(For Earth these two days are almost the same.)

Mercury. Mercury takes 88 Earth days to go around the Sun, so its "year "is 88 Earth days.

It spins very slowly on its axis though, once every 58.6 Earth days relative to background stars. This is a "sidereal day".

Although this is shorter than the year, Mercury's "solar day" is longer thanits year.

Mercury's solar day is about 175.9 Earth days, because of this slow spin relative to the time taken to orbit.

Venus takes 243 Earth days to spin once on its axis, while it takes 224.7 Earth days to orbit the Sun. So, its sidereal day is longer thanits year.

(Although its spin on its axis is longer that its orbital period, it has a "solar day" of only 116.75 Earth days, since it spins in the other direction to Earth and most other planets.

The Sun on Venus will rise in the west and set in the east.)

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11y ago

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Related Questions

Do any planets have longer days or years?

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