Bob Moler's Ephemeris Blog

Ephemeris for Tuesday, July 31st.  The sun rises at 6:28.  It’ll be up for 14 hours and 40 minutes, setting at 9:08.   The moon, 1 day before full, will set at 5:59 tomorrow morning.

Let’s look ahead at the month of August in the skies which begins tomorrow.  Daylight hours will decrease from 14 hours and 37 minutes tomorrow to 13 hours 15 minutes on the 31st.  The altitude of the sun at local noon, that is degrees of angle above the horizon will decrease from 63 degrees today to just over 53 degrees on the 31st.  Straits area listeners can subtract one more degree from those angles.  Local noon, when the sun is due south, is about 1:43 p.m.  The big event of the month will be the Perseid meteor shower will reach its peak on Sunday morning the 12th.  Head out as soon as it gets dark, about 10:30 Saturday evening to watch the show.  At that early hour the meteors may be few, but they will leave long tails in the sky, coming from the northeast.  [Later as the meteor source or radiant rises more and more meteors will be visible.]

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