Harvest moon: Your guide to every full moon this year Why is it important?įor ancient societies, the autumnal equinox marked the end of summer and the vernal (or spring) equinox marked the end of winter, which helped people track time-sensitive activity, such as when to plant crops. It's still hurricane season: A hurricane in the Gulf of Mexico next week? Forecasters warn of 'significant threat' to US.įarmers' Almanac 2022-2023 forecast: What to expect this winter in the South Each of those instances is an equinox, which is derived from the Latin words for equal (aequus) and night (nox). But twice in the course of that yearlong trip around the sun, the Earth is not inclined toward or away from the sun. The Earth spins on a tilted axis as the planet orbits the sun. What does equinox mean?īut after the autumnal equinox, the northern hemisphere of the Earth begins to tilt away from the sun, so nights will get longer and days will grow shorter until the winter solstice, which will be on Dec. Clouds notwithstanding, the South region will get about 12 hours and 15 minutes of daylight. The alignment officially occurs this year at 8:03 p.m. Thursday. But before we break out the pumpkin spice lattes and go shopping for Halloween costumes, here are five things to know about this annual astronomical event: What is the autumnal equinox?ĭuring the autumnal equinox, the sun shines directly on the equator, and the northern and southern hemispheres get the same amount of rays. Parts of the South region were teased with a "faux fall" followed by record breaking heat, with temperatures reaching 100 degrees, during the last week of summer.
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