![]() The Earth’s annual trip around the sun forms the basis for the astronomical calendar in which seasons are defined by two solstices and two equinoxes. (Image credit: NOAA Office of Education/Kaleigh Ballantine)ĭo you know the difference between meteorological and astronomical seasons? Astronomical seasons are based on the position of the Earth in relation to the sun, whereas meteorological seasons are based on the annual temperature cycle. In the Southern Hemisphere, the seasons are reversed where summer occurs when the South Pole is oriented towards the sun, and winter happens when the South Pole faces away. We generally think of winter as the coldest time of the year and summer as the warmest time of the year, with spring and fall being the transition seasons. Meteorological seasons are broken down into groupings of three months in our civil calendar based on the annual temperature cycle. The dates shown describe the astronomical seasons for the Northern Hemisphere in 2022 the exact dates vary slightly from year to year. ![]() The equinoxes occur halfway between these events when the sun’s path is aligned with the Earth’s equator. At the winter solstice, the North Pole is tilted away from the sun, whereas at the summer solstice, the North Pole is tilted toward the sun. The Earth is tilted 23.5 degrees on its axis of rotation, and how the North Pole is oriented toward or away from the sun determines two of these astronomical dates. About the education resource collectionsĭo you know the difference between meteorological and astronomical seasons? Astronomical seasons are based on the position of the Earth in relation to the sun, whereas meteorological seasons are based on the annual temperature cycle.NOAA Sea to Sky: Education resource database.NOAA in your backyard: Education contacts near you.Ask your preschooler about what they think looks the same and what they think looks different. Choose your city and take a look! Try to always look at the same camera each season. There are plenty of live cameras that stream various places all over the world. ![]()
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