Bob Moler's Ephemeris Blog

This is Ephemeris for Monday, August 24th. Today the Sun will be up for 13 hours and 37 minutes, setting at 8:33, and it will rise tomorrow at 6:57. The Moon, 4 days before full, will set at 3:57 tomorrow morning.

Late Thursday night and into Friday morning, clouds permitting, we will be able to see a partial eclipse of the moon. The moon will be almost totally immersed in the earth’s umbral shadow, with only a tiny sliver of the top of it visible at maximum eclipse. The partial eclipse starts at 10:34 PM EDT Thursday night (2:34 UT Friday morning the 28th). The maximum of eclipse will be at 12:13 AM (4:13 UT), and it will end at 1:52 AM (5:52 UT). So it will be nice viewing for those who can stay up late to see it. The moon will pass through the northern part of the earth’s shadow and since about 93% of the moon’s diameter will be immersed, the reddish appearance of the moon in the shadow might be apparent, and will definitely be apparent in binoculars.

The astronomical event times given in this blog are for the Traverse City/Interlochen area of Michigan (Lat 44.7° N, Long 85.7° W; EDT, UT – 4 hours) unless stated otherwise. Times will be different for other locations.

Addendum