![]() The subsolar point reaches the southernmost point in December for the Winter Solstice. After it reaches its northernmost point during the Summer Solstice in June, it begins to change direction towards the south. Throughout the year, the region of the Earth directly beneath the Sun, known as the subsolar point, shifts along a north to south axis. NASA/JPL-Caltech What’s the difference between a solstice and an equinox? The illustration shows the different points at which the summer and winter season take place, with the equinoxes marking the change of seasons. In December, the Southern Hemisphere receives more sunlight. In June, the Northern Hemisphere is titled more towards the Sun while the Southern Hemisphere tilts away from the star, marking the summer solstice. This results in the change of the seasons. During the autumn equinox, the Southern and Northern Hemisphere trade places in receiving the amount of light and warmth from the Sun. The Earth is tilted on its axis by about 23.4 degrees. This takes place around the same time every year, where the Sun shines directly over the equator and distributes the same amount of light on either side of the planet.įor the Northern Hemisphere, this marks the beginning of shorter days and colder weather. Eastern.ĭuring that time, the Sun will be exactly above the Earth’s equator and will appear overhead at noon as seen from the equator. ![]() The 2021 fall equinox will take place on Wednesday, Septemat 3:21 p.m. What exact time is the September 2021 fall equinox? Inverse breaks down everything you need to know about this annual event. The seasonal change is actually due to our planet’s tilt on its axis, and a time when the Northern and Southern Hemispheres essentially trade places. On September 22, the Sun will cross the celestial equator and mark the beginning of a new season and the September 2021 fall equinox.įor that brief moment during the autumn equinox, night and day are almost exactly equal before the day begins to get shorter.
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