That is not true.
One day on the Moon (the Earths natural satellite) is a time that elapses during its rotation around its own axis and is about 27 Earthly days.
On the other hand, one Moon day is also one Moon year as it takes almost same time for Moon to finish orbit around Earth once.
If a "day" is the time from one sunrise to the next, then on the moon, that's roughly 29 earth days.
It isn't. A "day on the Moon" is about 29.5 Earth days; a year is about 365 days.
A day on the moon is about 29.5 Earth days long, which is roughly equivalent to a lunar month. A year on the moon, however, is about the same length as a year on Earth, as it takes the moon approximately 27.3 Earth days to complete one orbit around the Earth.
Because the Moon Turns Slower Then The Earth.
it depends what time of year and even what day it is
A day on the Moon (about 29.5 Earth days) is the same length as a year on Earth (365.25 days) because of a phenomenon called synchronous rotation. The Moon's rotation period is the same as its orbit around Earth, causing one side of the Moon to always face Earth, leading to equal lengths of day and year.
A day on the moon is 29.5 Earth days. The moon takes 27.3 days to fully orbit the Earth. This is called a sidereal day.
Techincally speaking that would never happen. The moon would have to be VERY close to the Earth. The moon moves away from the earth 1.75 inches away from the earth each year, making the hours of the day longer. If the moon did orbit the earth in one day, this would happen around the time period the moon formed in space.
The Moon "year" is basically the same as the Earth's, because they orbit the Sun together. That's about 365.25 Earth days. A Moon "day" is about 27.3 or 29.5 Earth days, depending on the definition used for day. So, the answer is "shorter".
A day and a year on the moon are the same length because the moon rotates on its axis at the same rate that it orbits around the Earth, causing one side of the moon to always face us. This synchronous rotation results in a day (one full rotation) on the moon taking the same amount of time as a complete orbit around the Earth (a year).
The Moon's day, or "lunar day" lasts about 29.5 Earth days, which is the time it takes for the Moon to complete one full rotation on its axis. This is the same amount of time it takes for the Moon to complete one orbit around the Earth.
Magic.