A MONTH OF WAXING AND WANING LIGHT
May 1991 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 | 95% | 21:56 | 06:36 | |
| 5/2 | Waning Gibbous | 90% | 22:48 | 07:22 | |
| 5/3 | Waning Gibbous | 84% | 23:34 | 08:14 | |
| 5/4 | Waning Gibbous | 76% | — | 09:09 | |
| 5/5 | Waning Gibbous | 68% | 00:14 | 10:07 | |
| 5/6 | Waning Gibbous | 59% | 00:49 | 11:06 | |
| 5/7 | Waning Crescent | 49% | 01:20 | 12:06 | |
| 5/8 | Waning Crescent | 39% | 01:48 | 13:07 | |
| 5/9 | Waning Crescent | 30% | 02:14 | 14:08 | |
| 5/10 | Waning Crescent | 21% | 02:40 | 15:12 | |
| 5/11 | Waning Crescent | 13% | 03:08 | 16:18 | |
| 5/12 | Waning Crescent | 6% | 03:37 | 17:28 | |
| 5/13 | Waning Crescent | 2% | 04:12 | 18:41 | |
| 5/14 | New Moon | 0% | 04:53 | 19:56 | |
| 5/15 | Waxing Crescent | 1% | 05:43 | 21:08 | |
| 5/16 | Waxing Crescent | 6% | 06:42 | 22:13 | |
| 5/17 | Waxing Crescent | 12% | 07:51 | 23:08 | |
| 5/18 | Waxing Crescent | 21% | 09:04 | 23:53 | |
| 5/19 | Waxing Crescent | 31% | 10:17 | — | |
| 5/20 | Waxing Crescent | 42% | 11:28 | 00:31 | |
| 5/21 | Waxing Gibbous | 53% | 12:35 | 01:03 | |
| 5/22 | Waxing Gibbous | 64% | 13:40 | 01:31 | |
| 5/23 | Waxing Gibbous | 74% | 14:44 | 01:58 | |
| 5/24 | Waxing Gibbous | 82% | 15:46 | 02:24 | |
| 5/25 | Waxing Gibbous | 89% | 16:48 | 02:52 | |
| 5/26 | Waxing Gibbous | 95% | 17:50 | 03:22 | |
| 5/27 | Waxing Gibbous | 98% | 18:50 | 03:56 | |
| 5/28 | Full Moon | 100% | 19:48 | 04:34 | |
| 5/29 | Full Moon | 100% | 20:42 | 05:18 | |
| 5/30 | Waning Gibbous | 98% | 21:30 | 06:08 | |
| 5/31 | Waning Gibbous | 94% | 22:13 | 07:02 |
Born in May 1991?
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.