Sunday/ the vernal equinox

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Despite the drizzly weather, there was a number of people out to take a look at the cherry blossoms in the quad of the University of Washington today.

It is officially spring* here in the northern hemisphere ! .. even though it was a rainy, cloudy day here in Seattle.  (The sun did come out early evening afternoon, just before it set at 7.24 pm).

*Spring starts at the vernal equinox, the day the sun ‘crosses’ the celestial equator (the imaginary line in the sky above the earth’s equator), from south to north.  The sun does not really cross the equator.  The earth spins like a top around a tilting axis, which at this time of year is at a right angle to the sun.  So that is why day and night are nearly exactly the same length (12 hours) all over the world at this time of year, and again at the autumnal equinox.

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