When Does Spring End 2023 – What causes the seasons? Here are answers to frequently asked questions about the equinox and solstice dates for 2023 and the seasons in North America. (Do you know which season is shorter?)
Many people believe that the four seasons occur because the Earth is closer to the Sun in the summer (so it is warmer) and further away from the Sun in the winter (so it is cooler). This is not correct.
When Does Spring End 2023
The tilt of the Earth’s axis causes the seasons. In fact, winter is when the Earth is closest to the Sun (and vice versa). in a little while.
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Our year (12 months) is usually divided into four seasons, each lasting about three months (but not exactly).
Season start and end dates vary depending on who you ask. Each season has an astronomical and meteorological beginning. It sounds complicated, but trust us, it’s not!
Note: The above dates correspond to the beginning of the seasons mentioned in the Northern Hemisphere. Times are based on Eastern Time (ET). Subtract 3 hours for Pacific Time, 2 hours for Mountain Time, 1 hour for Central Time and earlier.
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It is an astronomical “calendar of the heavens”, so our book has long followed the astronomical definition of seasons based on the Sun and Earth!
As mentioned at the beginning of this article, the tilt of the Earth’s axis causes the seasons. The axis is always tilted in the same direction. Therefore, as the Earth revolves around the Sun during the 12 months of the year, different parts of the Earth receive direct sunlight.
Check out the map below. When the North Pole is tilted toward the Sun, it is summer in the Northern Hemisphere. If the South Pole is tilted towards the Sun, it is winter in the Northern Hemisphere.
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You may have noticed that the first day of spring is on a different date than when you were younger. Dates actually change over time. Why? There are many reasons, but one that is easy to understand: the sun does not follow the human calendar!
Although our Gregorian calendar is modeled after the time it takes the Earth to make one revolution around the Sun, it is not accurate. In particular, it removes leap days in centennial years that are not evenly divisible by 400, such as 1700, 1800, and 2100, and in millennial years that are divisible by 4000, such as 8000 and 12000.
Thus, the dates of the equinoxes and solstices may vary by a day or two from time to time and thus the starting dates of the seasons may also change over time.
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Sometimes it seems like winter drags on forever, but did you know that winter is actually the shortest time of the year? (In the Northern Hemisphere, that is.)
Why? Due to the elliptical shape of the Earth around the Sun, the Earth is not at the same distance from the Sun throughout the year. In January we reach the point of our orbit closest to the Sun (called perihelion), and in July we reach the farthest point (apellion). Read more about perihelion and abelian.
When Earth is closer to the Sun, the star’s gravitational pull is a little stronger, so our planet travels a little faster in its orbit. For those of us in the Northern Hemisphere, it’s a short fall and winter, as we speed through space this time of year. Conversely, when Earth is farthest from the Sun, it travels more slowly, resulting in longer spring and summer seasons. (The opposite is true in the southern hemisphere.)
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In other words, it takes less time for the Earth to move from the Autumnal Equinox to the Autumnal Equinox than it does to move from the Fall Equinox to the Spring Equinox.
What defines each season? Below is a brief description of the four seasons in calendar year order. See the equinoxes and solstices pages listed for more information.
At the vernal equinox, each day and night is about 12 hours long (the actual equinox occurs a few days before the vernal equinox in the Northern Hemisphere). The sun crosses the celestial equator and moves north; It rises in the east and sets in the west.
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At the summer solstice we experience the longest daylight hours of the calendar year. The Sun reaches its northernmost point in the sky (in the Northern Hemisphere) at noon. After this date, the days begin to “shrink,” meaning the length of daylight begins to decrease.
At the autumnal equinox, each day and night lasts about 12 hours (with the actual time of the equinox in the Northern Hemisphere a few days after the autumnal equinox). The Sun crosses the celestial equator in the south; It rises in the east and sets in the west.
The winter solstice is the “shortest day” of the year, meaning the least amount of sunlight. The sun reaches its southernmost point in the sky (in the northern hemisphere) at exactly noon. After this date, the days start getting “long”, ie. The amount of daylight begins to increase. When does spring start? In 2023, the official first day of spring will be Monday, March 20. This date marks the “Vernal Equinox” in the Northern Hemisphere. What is the vernal equinox and is it always on the 20th day? Before you try to balance those eggs, read on to learn more — and enjoy ideas on how to celebrate this season!
March Equinox 2023
In 2023, the March equinox occurs on March 20 at 5:24 p.m. EDT. It falls on a Monday and marks the astronomical beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere.
If you thought the spring equinox was only on March 21, you might be out of date. The date of the equinoxes in the civil calendar rotates every year. Find out why.
In the Northern Hemisphere, the vernal equinox (also known as the March equinox or vernal equinox around the world) occurs when the Sun crosses the celestial equator in a south-to-north direction. It is called the “spatial” equator because there is an imaginary line in the sky above the Earth’s equator. Imagine standing on the equator; The sun will go straight up on its northern path.
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At the March equinox, the northern and southern hemispheres receive approximately equal amounts of sunlight; Neither hemisphere is tilted more toward or away from the Sun than the other.
Although in most places (except the North Pole and the equator) the amount of daylight increases each day after the winter solstice, many places have more light than darkness in each 24-hour day after the vernal equinox. The amount of daylight increases daily until the summer solstice in June, when daylight hours are at their longest.
Here’s an interesting fact: for all of us on Earth, the equinoxes are the only times of the year when the sun rises in the east and sets in the west! When the Sun is overhead, the Earth’s tilt with respect to the Sun is zero, meaning that the Earth’s axis is neither toward nor away from the Sun. (Note, however, that the Earth never rotates in a straight line, but is always tilted about 23.5 degrees on its axis.)
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A: Well, both. The answer depends on your definition of “spring”. Both dates are correct; They have different perspectives. We will explain…
Astronomically, the first day of spring is marked by the vernal equinox, which falls on March 19, 20, or 21 each year. Even though our clocks reflect different time zones, the equinoxes occur at the same time around the world. Also, as mentioned above, this date only marks the beginning of spring in the Northern Hemisphere; Heralding the arrival of autumn in the Southern Hemisphere.
Interestingly, due to time zone differences, the March 21st equinox in America was not observed for the entire 21st century! We won’t see the March 21st equinox again until the year 2101.
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Meteorologically, the official first day of spring is March 1 (and the last day is May 31). Meteorologists divide the year into quarters to facilitate year-to-year comparisons of seasonal and monthly data. Weather seasons are based on annual temperature cycles rather than the position of the Earth relative to the Sun and follow the Gregorian calendar more closely. Because these dates vary slightly from year to year, using astronomical equinox and solstice dates for the seasons presents a statistical problem.
The sun appears above the horizon and does not end until the last part of the sun disappears below the horizon. If the Sun shrunk to a star point and we lived in an airless world, the vernal and autumnal equinoxes would actually have the same nights.
Q: According to folklore, you can put a raw egg at the end of the equator. Is this true?
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A: This egg folklore became popular after a 1945 biographical essay about the spring practice. “This myth has its origins in ancient Chinese stories of the appearance of a straight egg on the first day of spring,” says John Millis, assistant professor of physics and astronomy at Anderson University in South Carolina. The first day of spring six weeks before the equinox”—not just at the equinox.
Like most folklore, this is only partially true. You will finally be able to balance the egg