Here on Earth, people take time for granted. But in reality, everything is based on an extremely complex system. For example, the way people calculate days and years follows from what is the distance between the planet and the Sun, from the time it takes for the Earth to complete a revolution around the gas star, as well as the time it takes to complete a movement of 360 degrees around its axis. The same method applies to the rest of the planets in the solar system. Earthlings are used to thinking that a day contains 24 hours, but on other planets the length of a day is much different. In some cases they are shorter, in others they are longer, sometimes significantly. The solar system is full of surprises and it's time to explore.
Mercury
Mercury is the planet closest to the Sun. This distance can be from 46 to 70 million kilometers. Considering the fact that it takes Mercury about 58 Earth days to turn 360 degrees, it is worth understanding that on this planet you can only see the sunrise once every 58 days. But in order to describe a circle around the main luminary of the system, Mercury needs only 88 Earth days. This means that a year on this planet lasts about a day and a half.
Venus
Venus, also known as the Earth's twin, is the second planet from the Sun. The distance from it to the Sun is from 107 to 108 million kilometers. Unfortunately, Venus is also the slowest rotating planet, as can be seen when looking at its poles. While absolutely all planets in the solar system have experienced flattening at the poles due to their speed of rotation, Venus has no signs of it. As a result, Venus takes about 243 Earth days to go around the main star of the system once. It may sound strange, but the planet takes 224 days to complete a full rotation on its axis, which means only one thing: a day on this planet lasts longer than a year!
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Earth
When it comes to days on Earth, people usually think of them as 24 hours, when in reality the rotation period is only 23 hours and 56 minutes. Thus, one day on Earth is equal to about 0.9 Earth days. It looks strange, but people always prefer simplicity and convenience over accuracy. However, things are not so simple, and the length of the day can vary - sometimes it even actually equals 24 hours.
Mars
In many ways, Mars can also be called Earth's twin. In addition to the fact that it has snow poles, a change of seasons and even water (albeit in a frozen state), a day on the planet is extremely close in duration to a day on Earth. A revolution on its axis takes Mars 24 hours, 37 minutes and 22 seconds. Thus, the day here is slightly longer than on Earth. As mentioned earlier, the seasonal cycles here are also very similar to the terrestrial ones, so the options for the length of the day will be similar.
Jupiter
Given the fact that Jupiter is the largest planet in the solar system, one would expect it to have incredibly long days. But in reality, everything is completely different: a day on Jupiter lasts only 9 hours, 55 minutes and 30 seconds, that is, one day on this planet is about a third of the earth's day. This is due to the fact that this gas giant has a very high rotation speed around its axis. It is because of this that very strong hurricanes are also observed on the planet.
Saturn
The situation on Saturn is very similar to that observed on Jupiter. Despite its large size, the planet has a low rotation speed, so it takes only 10 hours and 33 minutes for Saturn to rotate 360 degrees. This means that one day on Saturn is less than half an earth day in duration. And, again, the high rotational speed leads to incredible hurricanes and even a constant eddy storm at the South Pole.
Uranus
When it comes to Uranus, the question of calculating the length of the day becomes difficult. On the one hand, the rotation time of the planet around its axis is 17 hours, 14 minutes and 24 seconds, which is slightly less than a standard Earth day. And this statement would be true if not for the strongest axial tilt of Uranus. The angle of this tilt is over 90 degrees. This means that the planet is moving past the main star of the system, actually on its side. Moreover, in this situation, one pole looks towards the Sun for a very long time - as much as 42 years. As a result, we can say that a day on Uranus lasts 84 years!
Neptune
Neptune is the last on the list, and this also raises the problem of measuring the length of the day. The planet makes a full rotation around its axis in 16 hours, 6 minutes and 36 seconds. However, there is a catch here - given the fact that the planet is a gas-ice giant, its poles rotate faster than the equator. Above, the time of rotation of the planet's magnetic field was indicated - its equator turns in 18 hours, while the poles complete their circular rotation in 12 hours.