It's Mars.
A "sol", or solar day on Mars, is only about 40 minutes longer than a solar day on Earth. This is by far the closest to being the same as Earth's of any planet in the solar system.
Earth is the closest planet to the moon and Venus follows as the second closest planet to the moon
The closest planet to the Moon is Earth. The Moon is Earth's natural satellite and is closest to our planet in terms of distance.
Venus is the second closest planet to the sun.
No planet really does have a day "the same length as Earth", but Mars definitely has the one that's the closest. The day length of Mars is just over half an hour longer than Earth's.
What planet is closest to the earth
Mercury is the smallest planet closest to the earth.
My planet is Earth. Earth's closest star is the Sun.
Earth is the third closest planet to the sun.
The second closest planet to Mars is Earth. After Earth, the next closest planet to Mars is Jupiter.
Venus is the planet closest in mass to Earth, with a mass about 81% that of Earth.
The star closest to Earth is the sun. The phrase "... largest to planet Earth ... " is meaningless.