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08/24/2021 – Ephemeris – The Harvest Moon is coming next full moon

24 Aug 2021, 04:01 UTC
08/24/2021 – Ephemeris – The Harvest Moon is coming next full moon
(200 words excerpt, click title or image to see full post)

This is Bob Moler with Ephemeris for Tuesday, August 24th. Today the Sun will be up for 13 hours and 36 minutes, setting at 8:33, and it will rise tomorrow at 6:57. The Moon, 2 days past full, will rise at 10:00 this evening.
We are at that time of year when the advance in Moon rising times from night to night is shorter than the average 50 minutes per night. Tonight the Moon will rise only 21 minutes later than it did last night, and tomorrow’s Moon will rise 20 minutes later than it will tonight. It’s what I call the harvest moon effect, though Harvest Moon will be next month. I find the effect lasts for three full moons, centered on the start of autumn. That’s because the angle of the Moon’s and also the Sun’s paths in the sky called the ecliptic intersect the horizon at a shallow angle near sunset. It’s also the reason Venus will stay close to the western horizon for its evening appearance this year. The planets also hang around the ecliptic, where the zodiacal constellations are.
The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT – ...

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