September 2023

1. Sun
2. Mon
3. Tue
4. Wed
5. Thu
6. Fri
7. Sat
13. 1 96%
14. 2 90%
15. 3 82%
16. 4 73%
17. 5 63%
18. 6 Last qtr
19. 7 43%
20. 8 33%
21. 9 24%
22. 10 17%
23. 11 10%
24. 12 5%
25. 13 2%
26. 14 New
27. 15 0%
28. 16 2%
29. 17 6%
30. 18 12%
31. 19 19%
32. 20 28%
33. 21 38%
34. 22 First qtr
35. 23 60%
36. 24 70%
37. 25 81%
38. 26 89%
39. 27 95%
40. 28 99%
41. 29 Full
42. 30 98%

• Moon phase
• Perigee or apogee
• Eclipse
• Planets
• Equinox or solstice

Events in September 2023

1. Fri, Sep 14:13 AM

   Moon and Neptune close together

   They pass 1.2° apart in the sky.

2. Mon, Sep 42:05 PM

   Moon and Jupiter close together

   They pass 3.1° apart in the sky.

3. Tue, Sep 51:54 AM

   Jupiter, Moon, and Uranus gathered

   All within 7.5° of each other in the sky.

4. Tue, Sep 53:27 AM

   Moon and Uranus close together

   They pass 2.7° apart in the sky.

5. Wed, Sep 67:02 AM

   Mercury at inferior conjunction

   Passes between Earth and the Sun and is lost in its glare.

6. Wed, Sep 66:21 PM

   Last Quarter

   Half of the disc is lit. The Moon rises around midnight and is up through the morning.

7. Tue, Sep 12

   Apogee

   The Moon's farthest point from Earth on this orbit: 406,300 km.

8. Thu, Sep 149:40 PM

   New Moon

   The Moon passes between Earth and the Sun and cannot be seen. These are the darkest nights of the month.

9. Sat, Sep 163:53 PM

   Moon and Mars close together

   They pass 0.6° apart in the sky.

10. Sat, Sep 1611:15 PM

    Venus at its brightest

    Shines at magnitude -4.8, as bright as it gets this time around.

11. Tue, Sep 197:07 AM

    Neptune at opposition

    Opposite the Sun in the sky: up all night and at its brightest for the year.

12. Fri, Sep 229:17 AM

    Mercury at greatest elongation

    18° from the Sun in the morning sky, its best showing before sunrise.

13. Fri, Sep 223:32 PM

    First Quarter

    Half of the disc is lit. The Moon is high at sunset and sets around midnight.

14. Sat, Sep 232:49 AM

    September equinox

    Day and night are nearly equal. Autumn begins in the northern hemisphere and spring in the southern.

15. Tue, Sep 2611:00 PM

    Moon and Saturn close together

    They pass 2.4° apart in the sky.

16. Wed, Sep 27

    Perigee

    The Moon's closest point to Earth on this orbit: 359,900 km.

17. Thu, Sep 281:53 PM

    Moon and Neptune close together

    They pass 1.3° apart in the sky.

18. Fri, Sep 295:58 AM

    Full Moon Harvest Moon

    The whole disc is lit. The Moon rises around sunset and stays up all night.

Times are local to America/New York. Each Moon is drawn as it looks at midday.