Its handy to remember:

June 21: Summer solstice -- longest day of year, highest noon sun of year

Dec 21: Winter solstice -- shortest day of year, lowest noon sun of the year

Sept 21: Fall equinox -- 12 hour day -- sun elevation at noon is 90 - latitude

Mar 21: Spring equinox -- 12 hour day -- sun elevation at noon is 90 - latitude

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