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Astronomer, Teacher, Musician

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Lunar Days in August

Moon Crater Bailly – Lies Close to the Western Limb

moon crater Bailly location on the moon

The week of August 31 – September 6 takes us from Day 12 to Day 18. This week we will highlight the moon crater Bailly, visible on Tuesday night close to the terminator. Bailly: [SW/R3; L=69°W] To observe this moon

Andrew Planck August 31, 2026August 25, 2026 Craters on the Moon, Lunar Days in August, Moon craters No Comments Read more

Moon Crater Schickard – Wide Central Stripe of Lighter Material

Schickard close up view of location on the moon

The week of August 24-30 takes us from Day 12 to Day 18.  This week we will highlight the moon crater Schickard, visible on Tues. night close to the terminator. Schickard: [SW/P4; L=55°W] When you look at Schickard you should

Andrew Planck August 24, 2026August 18, 2026 Craters on the Moon, Lunar Days in August, Moon craters No Comments Read more

Moon Crater Clavius – Small Notch Out of Terminator of the Moon

Clavius Crater on the moon

The week of August 17-23 takes us from Day 5 to Day 11. This week we will highlight the moon crater Clavius, visible on Saturday night close to the terminator. Clavius: [SW/Q8; L=14°W] If you catch the Moon at the

Andrew Planck August 17, 2026August 11, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, Moon craters No Comments Read more

Schrödinger – Large Impact Moon Crater Called a Walled Plain

Schrodinger moon crater

The week of August 10 takes us from Day 28 to Day 4. This week we will highlight the moon crater Schrodinger, visible on Thursday night close to the terminator. Schrödinger is a large impact moon crater of the form

Andrew Planck August 10, 2026August 6, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, Moon craters No Comments Read more

Apennine Mountain Range on the Moon – Most Spectacular Feature

Apennine Mountain Range

The week of August 25-31 takes us from Day 25 to Day 9. This week we will highlight Montes Apenninus, visible on Sunday night close to the terminator. Montes Apenninus: [NW/H9-G10; L=4°W] The Apennine Mountain Range is the most spectacular

Andrew Planck August 25, 2025August 22, 2025 Lunar Days in August, Mountain Ranges on the Moon No Comments Read more

Reiner Gamma and Lunar Swirls on the Moon

Reiner Gamma and Reiner on the moon

The week of August 18-24 takes us from Day 25 to Day 2. This week we will highlight the Reiner Gamma, visible on Tuesday & Wednesday nights close to the terminator. Reiner Gamma: [NW/J4; L=59°W] Lunar swirls are absolutely flat

Andrew Planck August 18, 2025August 14, 2025 Lunar Days in August, Lunar Swirls, Unusual Features on the Moon No Comments Read more

Moon Crater Janssen – 85 miles Southwest of the Rheita Valley

Moon Crater Janssen view of surface of moon

The week of August 11-17 takes us from Day 18 to Day 24. This week we will highlight the moon crater Janssen visible on Tuesday night close to the terminator. Janssen: [SE/P13; L=40°E] Janssen is located 85 miles southwest of

Andrew Planck August 11, 2025August 7, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, Moon craters, Rilles on the Moon No Comments Read more

Schickard: Moon Crater Floor with Stripes

Schickard: Moon Crater Floor with Stripes

The week of August 4-10 takes us from Day 11 to Day 17. This week we will highlight the moon crater Schickard, visible on Wednesday night close to the terminator. Schickard: [SW/P4; L=55°W] When you look at moon crater Schickard,

Andrew Planck August 4, 2025July 30, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, Moon craters No Comments Read more

The Longest Distinct Valley on the Moon – Rheita Valley

Petavius and Rheita Valley

The week of July 28 – August 3 takes us from Day 4 to Day 10. This week we will highlight the Rheita Valley on the moon, visible on Tuesday night close to the terminator. Vallis Rheita: [SE/N14; L=52°E] At

Andrew Planck July 28, 2025July 28, 2025 Lunar Days in August, Lunar Days in July, Moon craters, Valleys on the Moon No Comments Read more

Lunar Swirl Reiner Gamma and the Struve/Russel Moon Crater

Reiner Gamma Day 26

The week of August 26 – September 1 takes us from Day 22 to Day 29. This week we will highlight the lunar swirl Reiner Gamma and the Struve/Russel moon crater, located in the NW quadrant of the Field Map

Andrew Planck August 26, 2024August 22, 2024 Craters on the Moon, Lunar Days in August, Lunar Swirls, Moon craters No Comments Read more
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It is highly recommended that you get a copy of Sky and Telescope's Field Map of the Moon, the very finest Moon map available for use at the telescope. It is available for $10.95 at www.skyandtelescope.com and on Amazon. All features mentioned in this blog will be keyed to the grid on the Field Map and will look like this: Plato: [NW/D9]

Credits: Courtesy of Gray Photography of Corpus Christi, Texas Lunar photos: NASA / USGS / BMDO / LROC / ASU / DLR / LOLA / Moon Globe. Used by permission

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Andrew Planck
Andrew Planck
Author and Astronomer Andrew Planck shepherds you to the moon and its mysteries of intrigue and surprise. Learn about the moon’s most fascinating objects, understand how the moon was formed and the names of many of the craters … and why they honor individuals who have changed the course of history.
Andrew Planck
Latest posts by Andrew Planck (see all)
  • Moon Crater Bailly – Lies Close to the Western Limb - August 31, 2026
  • Moon Crater Schickard – Wide Central Stripe of Lighter Material - August 24, 2026
  • Moon Crater Clavius – Small Notch Out of Terminator of the Moon - August 17, 2026
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