The sunsets at different times worldwide. However, in this question, we will generally discuss when it gets dark? We will also address other questions related to the topic in this article.
How long after Sunset does it get dark?
It can take about 70 to 140 minutes for darkness to arrive after the sunset. However, the closer you are to the equator, the shorter the duration will be. On average, darkness arrives 23 minutes after the sun has set in locations near the equator. There are a pair of factors that determine the answer to this question:
- The season: In summers, it generally takes longer for darkness to arrive than in the winters (In some parts of the world, darkness may not arrive at all).
- Latitude: The closer you are to the equator, the quicker darkness will arrive. Please check out these links: What Kind of Data can be Transmitted over Two-Way Radio and 5 Best Business Two-Way Radios.
Does Latitude have an Impact on Darkness arrival time?
The sun rises and sets on the equator in a straight line. The sun rises in the East, goes over the earth during midday, and then sets in the West. The sunsets at a right angle to the horizon. The sunsets quicker below the horizon near the equator than at the poles.
Near the poles, the sun takes more time to set. It rises in the East, doesn’t move in a straight line, doesn’t get high during midday, and sets in the West. This is a flatter angle, which takes the sun more time to set below the horizon. During the March Equinox, the length of the day is the same for nearly every location. Check Out The Difference between Big Dipper and Little Dipper and James Webb Telescopes uses Radio Waves.
What is Equinox?
About twice a year, the daytime is equal to the nighttime. This event is known as Equinox, and it occurs when the sun’s center is exactly above the equator. During this event, the sun’s light refraction forces it to be seen above the horizon when it is actually below the sky.
The Equinox usually occurs in September (20th Sept); the days start shortly after this month. The Equinox also occurs on 20th March, when the duration of the days starts to rise. Check Out 5 Best Handheld Ham Radios and 5 Best Two-Way Handheld Radios.
Do Seasons have any effect on when Darkness Arrives?
The earth changes its position around the sun annually, affecting the nighttime. However, there isn’t a significant difference in the duration for most locations, but the duration changes when you go up north. 5 Best Waterproof Two-Way Radios and ICOM 2300H 05 144 MHz Amateur Radio Review.
In some places like Alaska, there is no nightfall during the summer. This happens because the sun is 6 degrees below the horizon. This phenomenon is called the ‘Midnight Sun .’However, during winters, the locals experience a different phenomenon called ‘Polar Day .’During this day, the duration of the night is over 24 hours.
It is not dark in the entire polar circle, only in places that are 5.5 degrees from the poles and when the moon is below the sky.
Three Different Phases of Twilight
There is a morning and evening twilight, and both have three main phases:
- Nautical Twilight
- Astronomical Twilight
- Civil Twilight
This phase starts when the sun starts to set and lasts until the sun is 6 degrees under the horizon. In this phase, many objects are visible, and even if there is a fog present, there is no need for artificial lights. Astronomers can easily locate planets like Venus and Mercury during the Civil twilight phase.
This phase kicks off when the sun is between 6 and 12 degrees under the horizon. During this phase, most stars in the sky are easy to see with the naked eye. While photographers can take pictures during this phase, the photos are usually blurry and dark. This phase is called Nautical Twilight because it refers to sailors who can use the stars as guidance and travel.
This phase is also the best time to see the moon’s dark side, which typically is hard to see because of the sun’s shadow. During this phase, the alignment of the sun allows the rays to be reflected off our planet and onto the moon.
This twilight phase appears when the sun reaches 12 degrees and lasts until about 18 degrees. During this phase, the night begins. During the Astronomical Twilight, the Astronomical dusk allows the astronomers to watch the sky and take photographs.
However, normal photographers cannot take pictures during this time, as colors are not visible and objects are tough to identify.
You should now have a very good idea of when it gets dark in different parts of the world. We discussed the three types of twilights and why the sun sets slower toward the north and south poles. Hopefully, you enjoyed this content. Please check out more interesting articles below.