Cluster Articles

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What the Beginning of Spring 2019 Looked Like Worldwide

The beginning of spring 2019 was defined by the March equinox on 20 March 2019 at 21:58 UTC. At that moment, the Sun crossed the celestial equator heading north, marking the ast...

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When Does Fall Begin: Understanding the Astronomical Start Date

Fall begins on the autumnal equinox, when the Sun crosses the celestial equator and daylight nearly equals nighttime around the world. For 2018, that equinox occurred on Septemb...

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