Home > Ephemeris Program, Events, Seasons > 03/18/11 – Ephemeris – Spring is almost here

03/18/11 – Ephemeris – Spring is almost here

March 18, 2011

Ephemeris for Friday, March 18th.  The sun will rise at 7:49.  It’ll be up for 12 hours and 2 minutes, setting at 7:52.   The moon, 1 day before full, will set at 7:16 tomorrow morning.

We are now two days and some hours from the beginning of spring.  Spring will arrive at 7:21 p.m. Sunday evening.  At that instant the sun will appear to cross the celestial equator, the projection of the earth’s equator on the sky, heading northward.  This will give us six months of over 12 hours daylight, culminating on June 21st with over 15 and a half hours of daylight for our listening area.  This is the spring or vernal equinox, or to be hemisphericaly correct, the March equinox, because those folks south of the equator will begin autumn.  Earth’s seasons are due to the tilt of its axis by 23 and a half degrees.  The earth’s axis is nearly fixed in space, but changes its orientation with respect to the sun during our yearly orbit.

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

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