A MONTH OF WAXING AND WANING LIGHT
May 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 |
|---|---|---|---|---|---|
| 5/1 | Waning Gibbous | 78% | — | 08:48 | |
| 5/2 | Waning Gibbous | 68% | 00:21 | 09:51 | |
| 5/3 | Waning Gibbous | 58% | 01:15 | 10:56 | |
| 5/4 | Waning Crescent | 47% | 01:59 | 12:03 | |
| 5/5 | Waning Crescent | 37% | 02:36 | 13:07 | |
| 5/6 | Waning Crescent | 27% | 03:07 | 14:09 | |
| 5/7 | Waning Crescent | 19% | 03:34 | 15:09 | |
| 5/8 | Waning Crescent | 12% | 03:59 | 16:08 | |
| 5/9 | Waning Crescent | 6% | 04:23 | 17:05 | |
| 5/10 | Waning Crescent | 3% | 04:47 | 18:03 | |
| 5/11 | New Moon | 0% | 05:12 | 19:01 | |
| 5/12 | New Moon | 0% | 05:40 | 19:59 | |
| 5/13 | Waxing Crescent | 2% | 06:11 | 20:58 | |
| 5/14 | Waxing Crescent | 5% | 06:48 | 21:56 | |
| 5/15 | Waxing Crescent | 10% | 07:30 | 22:51 | |
| 5/16 | Waxing Crescent | 16% | 08:18 | 23:41 | |
| 5/17 | Waxing Crescent | 24% | 09:13 | — | |
| 5/18 | Waxing Crescent | 33% | 10:13 | 00:27 | |
| 5/19 | Waxing Crescent | 43% | 11:16 | 01:07 | |
| 5/20 | Waxing Gibbous | 54% | 12:22 | 01:42 | |
| 5/21 | Waxing Gibbous | 64% | 13:29 | 02:14 | |
| 5/22 | Waxing Gibbous | 75% | 14:38 | 02:44 | |
| 5/23 | Waxing Gibbous | 84% | 15:48 | 03:13 | |
| 5/24 | Waxing Gibbous | 92% | 17:02 | 03:43 | |
| 5/25 | Waxing Gibbous | 97% | 18:18 | 04:16 | |
| 5/26 | Full Moon | 100% | 19:36 | 04:54 | |
| 5/27 | Full Moon | 99% | 20:52 | 05:38 | |
| 5/28 | Waning Gibbous | 96% | 22:03 | 06:31 | |
| 5/29 | Waning Gibbous | 90% | 23:04 | 07:32 | |
| 5/30 | Waning Gibbous | 82% | 23:54 | 08:39 | |
| 5/31 | Waning Gibbous | 72% | — | 09:48 |
Born in May 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.