“For example, at the North and South Poles, the length of the day and night is six months!”Īt the North Pole, the Sun will sink below the horizon for a kind of twilight from now until sometime in October when it will be completely dark, explained Adams. “However, that day/night length depends on where you are on Earth,” said NASA solar scientist Mitzi Adams. 22 marks the fall equinox, when day and night are nearly equal. Also, enjoy the warmer weather and extended daylight!
If you’re in the Northern Hemisphere, start watching the Sun as it sets just a bit farther north on the horizon each evening until the summer solstice. With the opposite season, south of the equator, there will be later sunrises, earlier sunsets, chillier winds, and dry, falling leaves. In the Northern Hemisphere, the March equinox will bring us earlier sunrises, later sunsets, softer winds, and budding plants. Think of an equinox as happening on the imaginary dome of our sky, or as an event that happens in Earth’s orbit around the Sun. The equinoxes and solstices are caused by Earth’s tilt on its axis and ceaseless motion in orbit. Throughout the world, the Northern and Southern hemispheres will get equal amounts of daylight. Credit: NASA/JPL-Caltechĭuring this equinox, the Sun will shine directly on the equator with nearly equal amounts of day and night, about 12 hours. During the equinoxes, both hemispheres receive equal amounts of daylight. An illustration of the March (spring) and September (fall or autumn) equinoxes. It arrives on March 20, 2021, at 09:37 UTC (Coordinated Universal Time) or 4:37 a.m. The March equinox – also called the vernal equinox – is the beginning of the spring season in the Northern Hemisphere and autumn season in the Southern Hemisphere. Also, get outside to enjoy the warmer weather and extended daylight! If you’re in the Northern Hemisphere, watch the Sun as it sets just a bit farther north on the horizon each evening until the June solstice – when the Sun reverses directions, moving back to the south. With the reversed season, those south of the equator will experience later sunrises, earlier sunsets, chillier winds, and dry, falling leaves. North of the equator, the March equinox will also bring us earlier sunrises, later sunsets, softer winds, and budding plants. Think of them like events happening as our planet make its journey around the Sun. At the equator, an equinox results in about 12 hours of daylight and 12 hours of night.Įquinoxes and solstices are caused by Earth’s tilt on its axis and the ceaseless motion it has while orbiting the Sun. The Sun will pass directly above the equator, bringing nearly equal amounts of day and night on all parts of Earth. These simultaneous seasons will occur March 20, 2022, at 15:33 UTC (Coordinated Universal Time) or 10:33 a.m. Seasons are reversed in the Southern Hemisphere where it will be autumn, also known as fall. The March equinox – also called the vernal equinox – is the astronomical beginning of the spring season in the Northern Hemisphere. (Image not to scale) Credits: NASA/GSFC/Genna Duberstein During the equinoxes, both hemispheres receive nearly equal amounts of daylight. However, “astronomical” seasons happen because of the tilt of Earth’s axis (with respect to the Sun-Earth plane), and our planet’s position during its orbit around the Sun.
For instance, the meteorological season of spring begins each year on March 1 and will end on May 31. “Meteorological seasons” follow the changing of the calendar, month to month, and are based on the annual temperature cycle – seasonal temperature variations modified by fluctuations in the amount of solar radiation received by Earth’s surface over the course of a year. Did you know our planet has two types of seasons? They are meteorological and astronomical.
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