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06/20/2012 – Ephemeris – Summer begins tonight!

June 20, 2012 Comments off

Ephemeris for Wednesday, June 20th.  Today the sun will be up for 15 hours and 33 minutes, setting at 9:31.   The moon, 1 day past new, will set at 10:12 this evening.  Tomorrow the sun will rise at 5:57.

We interrupt our weekly planet report to bring you this important news.  At 7: 07 (EDT) this evening summer will begin.  That instant of time is called the summer solstice.  Solstice means “sun standstill”.  That makes today the longest day in terms of daylight hours, though you will notice very little change for the next week or so.  We have come to the point in earth’s orbit when the north pole of the earth is tipped its maximum toward the sun so the northern hemisphere will receive the most heat from the sun.  The southern hemisphere will experience at that same instant their winter solstice.  The earth now is not at its closest to the sun.  In fact we’ll be at our farthest from the sun in two weeks.

Times are for the Traverse City/Interlochen area of Michigan.  They may be different for your location.