A MONTH OF WAXING AND WANING LIGHT
September 2021 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 Crescent | 33% | — | 15:17 | |
| 9/2 | Waning Crescent | 24% | 00:44 | 16:10 | |
| 9/3 | Waning Crescent | 16% | 01:37 | 16:58 | |
| 9/4 | Waning Crescent | 10% | 02:36 | 17:40 | |
| 9/5 | Waning Crescent | 4% | 03:40 | 18:18 | |
| 9/6 | Waning Crescent | 1% | 04:47 | 18:51 | |
| 9/7 | New Moon | 0% | 05:54 | 19:21 | |
| 9/8 | Waxing Crescent | 2% | 07:03 | 19:50 | |
| 9/9 | Waxing Crescent | 6% | 08:11 | 20:19 | |
| 9/10 | Waxing Crescent | 12% | 09:21 | 20:48 | |
| 9/11 | Waxing Crescent | 21% | 10:33 | 21:21 | |
| 9/12 | Waxing Crescent | 31% | 11:45 | 21:59 | |
| 9/13 | Waxing Crescent | 42% | 12:58 | 22:44 | |
| 9/14 | Waxing Gibbous | 53% | 14:07 | 23:36 | |
| 9/15 | Waxing Gibbous | 64% | 15:11 | — | |
| 9/16 | Waxing Gibbous | 75% | 16:06 | 00:37 | |
| 9/17 | Waxing Gibbous | 84% | 16:53 | 01:43 | |
| 9/18 | Waxing Gibbous | 91% | 17:31 | 02:51 | |
| 9/19 | Waxing Gibbous | 96% | 18:04 | 04:00 | |
| 9/20 | Waxing Gibbous | 99% | 18:32 | 05:06 | |
| 9/21 | Full Moon | 100% | 18:58 | 06:09 | |
| 9/22 | Waning Gibbous | 99% | 19:23 | 07:11 | |
| 9/23 | Waning Gibbous | 95% | 19:48 | 08:12 | |
| 9/24 | Waning Gibbous | 90% | 20:14 | 09:12 | |
| 9/25 | Waning Gibbous | 84% | 20:43 | 10:11 | |
| 9/26 | Waning Gibbous | 77% | 21:15 | 11:11 | |
| 9/27 | Waning Gibbous | 68% | 21:52 | 12:10 | |
| 9/28 | Waning Gibbous | 59% | 22:35 | 13:07 | |
| 9/29 | Last Quarter | 50% | 23:25 | 14:01 | |
| 9/30 | Waning Crescent | 40% | — | 14:51 |
Born in September 2021?
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.