The fact that there are 24 hours in a day is such an integral part of life on Earth that we sometimes forget that it is based on a system created by humans. What would our life be like if a day lasted only 10 hours instead of 24? But how will our routine change if we have to spend thousands of hours getting to the next day? The same is true for the year. Have you ever wondered what the seasons and calendars would look like if people in the past decided that the Earth would revolve around the Sun in 88 days? What about other planets in the solar system? Let’s look at the details together👇
What determines the day and year?
Simply put, a day is an expression that describes how long it takes a planet to complete one full rotation around its axis, and a year is an expression that describes how long it takes a planet to complete one revolution around the Sun. Considering a day as 24 hours and a year as 365 days has a history dating back to 4236 BC. It is known that the first calendar based on the movement of the sun was invented thousands of years ago by the ancient Egyptians.
Why do the day and year on other planets differ from ours?
Based on the information we shared above, the speed at which each planet rotates around itself and around the Sun is different than the Earth’s. In fact, some planets take more than a year for us to complete one day. That is, rotation around its own axis is slower than around the Sun. For example, Venus in this case makes one revolution around its axis in 243 Earth days. But it takes only 225 Earth days to make one complete revolution around the Sun. Meanwhile, a day on Neptune is 8 hours shorter than the earth, but it makes a revolution around itself only once in 165 earth years.
How long does a planetary day and year last for us?
Now, in light of the information we have given above, let’s consider together the length of one day and one year on other planets.
Day length: 58.67 Earth days (1408 hours).
Length of a year: 88 Earth days (0.2 Earth years)
Day length: 243 Earth days (5832 hours).
Length of a year: Approximately 225 Earth days (0.6 Earth years).
Day length: 1.04 Earth days (approximately 25 hours).
Length of a year: 687 Earth days (1.9 Earth years).
Day length: 0.42 Earth days (10 hours)
Length of the year: 4333 Earth days (11.9 Earth years).
Day length: 0.46 Earth days (approximately 11 hours).
Length of a year: 10,756 Earth days (29.4 Earth years).
Day length: 0.71 Earth days (approximately 17 hours).
Length of a year: 30,687 Earth days (approximately 84 Earth years).
Day length: 0.67 Earth days (16 hours).
Length of a year: 60,190 Earth days (165 Earth years)
You may be interested in:
From Mercury to Neptune: where do the names of the planets come from?
Planets of the solar system and their properties
Planet size order: from largest to smallest order of planets in the solar system
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