March Equinox in United States ― Date, History, and Details
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History of March Equinox in United States and How to Celebrate/ Observe It
The March equinox occurs when the sun crosses the celestial equator – the imaginary line in the sky above the Earth’s equator – from south to north. This happens on or around March 20-21 every year.
In the Northern Hemisphere, the March equinox marks the start of spring, while in the Southern Hemisphere it is the start of autumn. The word ‘equinox’ comes from the Latin for ‘equal night’, because around the time of the equinoxes, day and night are of roughly equal length all over the world.
At the March equinox, the sun rises exactly in the east and sets exactly in the west. From this point onwards, days will be longer than nights in the Northern Hemisphere, and vice versa in the Southern Hemisphere.
The March equinox is also known as the vernal equinox or spring equinox.