9/5/2023 0 Comments When does spring start![]() In contrast, the meteorological start of a season is based on the annual temperature cycle and the 12-month calendar.A solstice is when the Sun reaches the most southerly or northerly point in the sky, while an equinox is when the Sun passes over Earth’s equator. Because of leap years, the dates of the equinoxes and solstices can shift by a day or two over time, causing the start dates of the seasons to shift, too. More specifically, the start of each season is marked by either a solstice (for winter and summer) or an equinox (for spring and autumn). The astronomical start of a season is based on the position of the Earth in relation to the Sun.Here is more explanation about how astronomers and meteorologists define seasons differently: Subtract 3 hours for Pacific time, 2 hours for Mountain time, 1 hour for Central time, and so on. Note: The dates above correspond to the start of the listed seasons in the Northern Hemisphere. ![]() The First Days of the Seasons 2023 Seasons
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