A MONTH OF WAXING AND WANING LIGHT
September 2023 Moon phase calendar
Daily phase and illumination values use a Korea-time reference. Exact major phase moments are in Korea Standard Time (KST); moonrise and moonset below use Seoul as a reference location.
Major phase times
Which time zone does this calendar use?
Each major phase happens at the same instant worldwide. The cards show that instant in KST (UTC+9) and UTC; your local calendar date may be different. This month’s events are grouped by their KST date.
Daily phase and illumination are sampled at noon KST (03:00 UTC). Moonrise and moonset are for Seoul, not your current location. For local rise and set times, choose your location in Moonrise and moonset tonight.
Find the Moon on your birthday →Daily Moon phase
Select a date for its detailed Moon view.
| Date | Moon | Phase | Illumination | Moonrise | Moonset |
|---|---|---|---|---|---|
| 9/1 | Waning Gibbous | 98% | 19:58 | 07:00 | |
| 9/2 | Waning Gibbous | 94% | 20:25 | 08:15 | |
| 9/3 | Waning Gibbous | 87% | 20:53 | 09:28 | |
| 9/4 | Waning Gibbous | 78% | 21:22 | 10:39 | |
| 9/5 | Waning Gibbous | 69% | 21:55 | 11:50 | |
| 9/6 | Waning Gibbous | 58% | 22:34 | 12:58 | |
| 9/7 | Waning Crescent | 48% | 23:18 | 14:03 | |
| 9/8 | Waning Crescent | 38% | — | 15:02 | |
| 9/9 | Waning Crescent | 29% | 00:09 | 15:54 | |
| 9/10 | Waning Crescent | 21% | 01:05 | 16:38 | |
| 9/11 | Waning Crescent | 14% | 02:04 | 17:14 | |
| 9/12 | Waning Crescent | 8% | 03:05 | 17:45 | |
| 9/13 | Waning Crescent | 4% | 04:05 | 18:11 | |
| 9/14 | Waning Crescent | 1% | 05:05 | 18:34 | |
| 9/15 | New Moon | 0% | 06:03 | 18:56 | |
| 9/16 | Waxing Crescent | 1% | 07:02 | 19:18 | |
| 9/17 | Waxing Crescent | 4% | 08:00 | 19:40 | |
| 9/18 | Waxing Crescent | 9% | 09:01 | 20:04 | |
| 9/19 | Waxing Crescent | 15% | 10:03 | 20:31 | |
| 9/20 | Waxing Crescent | 23% | 11:09 | 21:03 | |
| 9/21 | Waxing Crescent | 32% | 12:16 | 21:43 | |
| 9/22 | Waxing Crescent | 43% | 13:23 | 22:32 | |
| 9/23 | Waxing Gibbous | 54% | 14:27 | 23:32 | |
| 9/24 | Waxing Gibbous | 65% | 15:23 | — | |
| 9/25 | Waxing Gibbous | 75% | 16:11 | 00:42 | |
| 9/26 | Waxing Gibbous | 85% | 16:51 | 01:58 | |
| 9/27 | Waxing Gibbous | 92% | 17:25 | 03:15 | |
| 9/28 | Waxing Gibbous | 97% | 17:55 | 04:32 | |
| 9/29 | Full Moon | 100% | 18:22 | 05:48 | |
| 9/30 | Full Moon | 99% | 18:50 | 07:02 |
Born in September 2023?
Choose your birth date to see that day’s Moon in 3D and make a card you can share.
Moonrise and moonset are astronomical calculations for Seoul and may differ from your location or visible horizon. Weather and local obstructions are not included.