First Day of Spring Sunset

    Yesterday, everywhere on our planet, the sun set was due west.  If you were standing on the equator yesterday the sun would have been directly overhead at noon and then gone straight down in the west.  In Ridgefield yesterday, the sun at noon would have been about 45 degrees above the horizon in the south and it would have gone down at a 45 degree angle and set due west.  On the first day of summer the sun here will be at 68 degrees above the horizon at noon(45 + 23 degrees) and would set at 23 degrees to the north of due west.   At the equator on the first day of summer, you would see the sun at 67 degrees above the horizon but in the north(90 – 23).  Sunset at the equator would be 23 degrees to the north of west.  Even though the earth turns once a day and half the earth is in sun and half in shadow, the tilt of the earth makes for a 16 hour day in summer instead of just a 12 hour day.  In the summer the northern hemisphere is very productive for growth of plants because of the long day and  the tilt of the earth give us.  Can you dig it?

~ Contributed by Paul Snoey

About Paul Snoey

I have a degree in Biology and Environmental Science from WSU Vancouver
I am very fond of Gee Creek and Allen Canyon Creek and do a lot of volunteer work to restore these creeks.

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