Bob Moler's Ephemeris Blog

Ephemeris for Friday, October 18th.  The sun will rise at 8:01.  It’ll be up for 10 hours and 50 minutes, setting at 6:52.   The Moon, at full today is the full Hunters Moon, will rise at 6:41 this evening.

There will be a penumbral eclipse of the moon tonight as the moon rises.  This is a special case of a partial eclipse, in that the moon dips only into the earth outer shadow, where sunlight to it is only partially blocked by the earth.  To the casual observer nothing appears to be happening, but near mid eclipse the bottom right part of the moon will appear to have a dusky appearance, a 5 o’clock shadow, so to speak, which is best seen wearing sun glasses to cut the bright glare of the full moon.  That mid eclipse point will occur at 7:50 this evening.  The moon will be in eclipse as it rises, and the eclipse will officially end at 9:52 p.m., though the shadow effect will be long gone by that time.

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

Addendum

Penumbral Eclipse of October 18-19. Times on this chart are Universal Time. The times in the post above are Eastern Daylight Time. Credit: H M Nautical Almanac Office, UK.

Note:  The moon has to dip into the Umbra for the eclipse to be a partial or total eclipse.  In the world map above Michigan is in the partially shaded part of the diagram, where the eclipse starts before the moon rises.  The darker shaded portions of the earth cannot see the eclipse at all.