Table of Contents
What are the days of the planets?
Keeping Time: Origins of the Days of the Week
| Day | Planet | Latin |
|---|---|---|
| Monday | Moon | Dies Lunae |
| Tuesday | Mars | Dies Martis |
| Wednesday | Mercury | Dies Mercurii |
| Thursday | Jupiter | Dies Jovis |
What is the length of the planets?
The Earth is the only planet with an approximately 24-hour day
| Planet | Length of Day |
|---|---|
| Mercury | 58.6 Earth days |
| Venus | 243 Earth days |
| Earth | 23 hours, 56 minutes |
| Mars | 24 hours, 37 minutes |
Why are days different lengths on different planets?
The ways in which we measure our days and years, for example, are actually the result of our planet’s distance from the Sun, the time it takes to orbit, and the time it takes to rotate on its axis. The same is true for the other planets in our Solar System.
What does length of year mean for planets?
approximately 365 days
A year is measured by how long it takes a planet to orbit around its star. Earth orbits around the Sun in approximately 365 days.
Why do weeks have 7 days?
The Babylonians, who lived in modern-day Iraq, were astute observers and interpreters of the heavens, and it is largely thanks to them that our weeks are seven days long. The reason they adopted the number seven was that they observed seven celestial bodies — the Sun, the Moon, Mercury, Venus, Mars, Jupiter and Saturn.
Which two planets have the same length of day?
Earth and Mars share many characteristics. Besides the almost identical length of the day with a difference of only 40 minutes, the two planets have almost the same environmental conditions and atmospheric phenomena. Also, Mars, well shown in this live camera, has the same hard surface and periodic seasons.
Why do different planets have different length of days?
During the equinoxes every location on Earth (excluding the extreme poles) experiences a 12-hour day length. Other planets also experience these changes in day and night length because they too are tilted on their axes. Each planet’s axis is tilted at a different angle.
Which planet has The Longest Day in a year?
So, 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.
Do any planets have longer days or years?
There are a few exceptions. For example, Venus has the longest day, although Mercury is the smallest planet (ever since Pluto got demoted). However, for the most part, large planets have short days. Planets that are farther from the sun have longer years. That makes sense… they have a much greater circumference to orbit around.