And in the space of a single Jovian year, the sun would rise and set a total of about 10, times. Despite its massive size, the planet has an estimated rotational velocity of 9. As such Saturn takes about 10 hours and 33 minutes to complete a single sidereal rotation, making a single day on Saturn less than half of what it is here on Earth. And, also like Jupiter, Saturn takes its time orbiting the Sun. With an orbital period that is the equivalent of 10, Using these various systems, scientists have obtained different data from Saturn over the years. In , this was revised by researches at the Department of Earth, Planetary, and Space Sciences, UCLA, which resulted in the current estimate of 10 hours and 33 minutes.
Much like with Jupiter, the problem of obtaining accurate measurements arises from the fact that, as a gas giant, parts of Saturn rotate faster than others. When we come to Uranus, the question of how long a day is becomes a bit complicated. One the one hand, the planet has a sidereal rotation period of 17 hours 14 minutes and 24 seconds, which is the equivalent of 0. So you could say a day on Uranus lasts almost as long as a day on Earth. With an axial tilt of This means that either its north or south pole is pointed almost directly at the Sun at different times in its orbital period.
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When that same pole is pointed away from the Sun i. Hence, you might say that a single day — from one sunrise to the next — lasts a full 84 years on Uranus! In other words, a single Uranian day is the same amount of time as a single Uranian year Last, but not least, we have Neptune. Here too, measuring a single day is somewhat complicated.
Meanwhile, the polar regions rotate the fastest, at a period of 12 hours. This differential rotation is the most pronounced of any planet in the Solar System, and it results in strong latitudinal wind shear.
3 tips for photographing the midnight sun
The long orbital period of Neptune means that the seasons last for forty Earth years. As you can see from this little rundown of the different planets in our Solar System, what constitutes a day depends entirely on your frame of reference. In addition to it varying depending on the planet in question, you also have to take into account seasonal cycles and where on the planet the measurements are being taken from.
As Einstein summarized, time is relative to the observer. Based on your inertial reference frame, its passage will differ. And when you are standing on a planet other than Earth, your concept of day and night, which is set to Earth time and a specific time zone is likely to get pretty confused! On April 20, the midnight sun comes back to Isfjord: the morning of the polar day. In late April, there is no such thing as twilight anymore.
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In May and June, the sun is above the horizon all the time, making the light sometimes a bit boring for photographers. The maximum amount of daylight is around the summer solstice in late June. The evening light comes back in mid August. Icebergs and glacier front. Negribreen, Storfjord.
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Similar late March and April, just the other way around, the days are getting rapidly shorter: it is just one month from the evening of the polar day on August 20 to the autumn equinox on September Now, you are suddenly back to a daily change between day and night, as you know it from lower latitudes, but with much longer periods of twilight. These seasons of change can provide beautiful and stunning light. In October, darkness and twilight are quickly getting longer, limiting daylight to an increasingly shorter period around noon, before the dark period is coming back on October Now it is not long anymore until the darkness of the polar night comes.
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By the way, polar night and midnight sun are slightly different in Arctic and Antarctic, not just out of phase but actually different in length, in contrast to what one might expect. Read more about this here: Polar night, polar day spitsbergen-svalbard. Spitsbergen Svalbard. New photo book.
Return of the sun in March. Tundra in Adventdalen, late May. Evening light on Moffen, mid September. Final daylight in late October.
The midnight sun | Where the sun never sets
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