The Longest Day on Planet - Which One Has the Longest Day?

Which Planet Has the Longest Day in Our Solar System?

Today’s topic is very interesting as it is devoted to the longest day on planet or better to say which one has the longest day. We are going to give an answer to this big question and find out the longest day on planet. Some people always complain since the time is not enough but what they would say if they had an opportunity to live another planet. Let’s discover together which planet has the longest day.

But before passing to the topic we will explain you what it means to say one day on the planet. The planets day is decided to the phenomenon as how long it takes to complete one rotation on its axis. It is also referred to as its rotational period.

Mercury: 58 days and 15 hours

longest day
58 days and 15 hours

Venus: 243 days

Which Planet Has the Longest Day in Our Solar System?
243 days

Mars: 24 hours, 39 minutes and 35 seconds

Which Planet Has the Longest Day in Our Solar System?
24 hours, 39 minutes and 35 seconds

Jupiter: 9.9 hours

Which Planet Has the Longest Day in Our Solar System?
9.9 hours

Saturn: 10 hours 45 minutes 45 seconds, but can only be approximated because of atmospheric density.

Which Planet Has the Longest Day in Our Solar System
10 hours 45 minutes 45 seconds, but can only be approximated because of atmospheric density

Uranus: 17 hours, 14 minutes and 24 seconds

17 hours, 14 minutes and 24 seconds
17 hours, 14 minutes and 24 seconds

Neptune: 16 hours, 6 minutes and 36 seconds. You need to do more research on the planet to completely understand the varying day on Neptune.

Which Planet Has the Longest Day in Our Solar System?
16 hours, 6 minutes and 36 seconds. You need to do more research on the planet to completely understand the varying day on Neptune

So, after the data you learnt that Venus has the longest day of any planet in our solar system. It completes one rotation every 243 Earth days. Its day lasts longer than its orbit. It orbits the Sun every 224.65 Earth days, so a day is nearly 20 Earth days longer than its year.

According to NASA “On Earth, a solar day is around 24 hours. However, Earth’s orbit is elliptical, meaning it’s not a perfect circle. That means some solar days on Earth are a few minutes longer than 24 hours and some are a few minutes shorter”.

Source: Text; spaceplace.nasa.gov, www.universetoday.com

Image credit; www.vectorstock.com