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Lunar Days in September

Moon Crater Aristoteles Adjoins the Moon Crater Mitchell to its Immediate East

Aristotleles on the moon

The week of September 28 – October 4 takes us from Day 18 to Day 24.  This week we will highlight the moon crater Aristoteles, visible on Tuesday night close to the terminator. Aristoteles: [NE/D11; L=17°E] Close to the terminator

Andrew Planck September 28, 2026September 23, 2026 Craters on the Moon, Lunar Days in September, Moon craters No Comments Read more

Clavius – Crater on the Moon

Clavius - crater on the moon

The week of September 21-27 takes us from Day 11 to Day 17. This week we will highlight the moon crater Clavius, visible on Tuesday night close to the terminator. Clavius: [SW/Q8; L=14°W] If you catch the Moon at the

Andrew Planck September 21, 2026September 15, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Moon craters No Comments Read more

Moon Crater Maginus

Maginus moon crater

The week of September 14-20 takes us from Day 4 to Day 10.  This week we will highlight the moon crater Maginus, visible on Saturday night close to the terminator. Maginus: [SW/Q9; L=6°W] Located at the eastern tip of the

Andrew Planck September 14, 2026September 10, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Moon craters No Comments Read more

Moon Crater Zeeman – Not Visible From Earth

crater zeeman on the surface of the moon

The week of September 7 – 13 takes us from Day 26 to Day 3.  This week we will highlight the moon crater Zeeman, visible on Friday night close to the terminator. Moon crater Zeeman is a huge, ancient crater

Andrew Planck September 7, 2026September 10, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September No Comments Read more

Moon Crater Humboldt – Best Viewed with Pronounced Libration

Humboldt

The week of September 22-28 takes us from Day 1 to Day 7. This week we will highlight the moon crater Humboldt, visible on Tuesday night close to the eastern edge. Humboldt1: [SE/M18] This moon crater is best viewed when

Andrew Planck September 22, 2025September 17, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September No Comments Read more

Moon Crater Kepler and Mons Delisle

Moon Crater Kepler and Mons Delisle

The week of September 15-21 takes us from Day 24 to Day 1. This week we will highlight the moon crater Kepler and Mons Delisle, visible on Tuesday night. Mons Delisle: [NW/G6] The over-imaginative among us say that if you

Andrew Planck September 15, 2025September 9, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Moon craters, Mountain Ranges on the Moon No Comments Read more

Theophilus – One of a Trio of Imposing Moon Craters

Theophilus – One of a Trio of Imposing Moon Craters

The week of September 8-14 takes us from Day 16 to Day 23. This week we will highlight the moon crater Theophilus, visible on Thursday night. Theophilus, Cyrillus, Catharina: [Repeated from Day 5–SE/L12; L=24°E] This is the most imposing trio

Andrew Planck September 8, 2025September 3, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September No Comments Read more

Cleomedes: First Significant Moon Crater North of Mare Crisium

Cleomedes

The week of September 1-7 takes us from Day 10 to Day 16. This week we will highlight the moon crater Cleomedes, visible on Sunday night. Cleomedes: [NE/G15; L=56°E] Cleomedes is the first significant moon crater just north of Mare

Andrew Planck September 1, 2025August 28, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Moon craters, Rilles on the Moon No Comments Read more

Floor-Fractured Crater on the Moon – Taruntius

Mare Fecunditatis on the moon

The week of September 30 – October 6 takes us from Day 27 to Day 4. This week we will highlight the moon crater Taruntius, viewable on Sunday nights located in the NE quadrant of the Field Map at J4.

Andrew Planck September 30, 2024October 2, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Floor Fractured Moon Craters, Lunar Days in October, Lunar Days in September No Comments Read more

Apennine Mountain Range on the Moon

Montes Apenninus

The week of September 23-29 takes us from Day 20 to Day 26. This week we will highlight the Apennine Mountains, viewable on Tuesday night, located in the NW quadrant of the Field Map at G10. Montes Apenninus: [Repeated from

Andrew Planck September 23, 2024September 15, 2024 Lunar Days in September, Mountain Ranges on the Moon, Uncategorized 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)
  • Petavius: Floor-Fractured Crater on the Moon - October 12, 2026
  • Rimae Sirsalis – One of the Longest Rilles on the Moon - October 5, 2026
  • Moon Crater Aristoteles Adjoins the Moon Crater Mitchell to its Immediate East - September 28, 2026
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