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Moon phase calendar October 1991
| Day | Phase | Illum. | Age | Rise (Tokyo) | Set (Tokyo) | |
|---|---|---|---|---|---|---|
| 1 Tue | Last quarter 09:29 | 49% | 22.7 | 23:00 | 12:57 | |
| 2 Wed | Last quarter | 38% | 23.7 | – | 13:44 | |
| 3 Thu | Waning crescent | 27% | 24.7 | 00:10 | 14:25 | |
| 4 Fri | Waning crescent | 17% | 25.7 | 01:20 | 15:00 | |
| 5 Sat | Waning crescent | 10% | 26.7 | 02:29 | 15:32 | |
| 6 Sun | Waning crescent | 4% | 27.7 | 03:37 | 16:03 | |
| 7 Mon | New moon | 1% | 28.7 | 04:44 | 16:33 | |
| 8 Tue | New moon 06:38 | 0% | 0.2 | 05:49 | 17:04 | |
| 9 Wed | New moon | 2% | 1.2 | 06:55 | 17:38 | |
| 10 Thu | Waxing crescent | 6% | 2.2 | 07:59 | 18:16 | |
| 11 Fri | Waxing crescent | 11% | 3.2 | 09:01 | 18:58 | |
| 12 Sat | Waxing crescent | 18% | 4.2 | 10:00 | 19:44 | |
| 13 Sun | Waxing crescent | 26% | 5.2 | 10:53 | 20:35 | |
| 14 Mon | First quarter | 35% | 6.2 | 11:41 | 21:30 | |
| 15 Tue | First quarter | 44% | 7.2 | 12:23 | 22:26 | |
| 16 Wed | First quarter 02:32 | 54% | 8.2 | 13:00 | 23:24 | |
| 17 Thu | First quarter | 63% | 9.2 | 13:32 | – | |
| 18 Fri | Waxing gibbous | 72% | 10.2 | 14:01 | 00:22 | |
| 19 Sat | Waxing gibbous | 80% | 11.2 | 14:29 | 01:20 | |
| 20 Sun | Waxing gibbous | 88% | 12.2 | 14:56 | 02:19 | |
| 21 Mon | Waxing gibbous | 94% | 13.2 | 15:24 | 03:19 | |
| 22 Tue | Full moon | 98% | 14.2 | 15:54 | 04:21 | |
| 23 Wed | Full moon 20:08 | 100% | 15.2 | 16:27 | 05:26 | |
| 24 Thu | Full moon | 99% | 16.2 | 17:05 | 06:33 | |
| 25 Fri | Full moon | 96% | 17.2 | 17:51 | 07:42 | |
| 26 Sat | Waning gibbous | 91% | 18.2 | 18:44 | 08:51 | |
| 27 Sun | Waning gibbous | 83% | 19.2 | 19:45 | 09:55 | |
| 28 Mon | Waning gibbous | 74% | 20.2 | 20:53 | 10:53 | |
| 29 Tue | Last quarter | 63% | 21.2 | 22:02 | 11:42 | |
| 30 Wed | Last quarter 16:10 | 52% | 22.2 | 23:12 | 12:25 | |
| 31 Thu | Last quarter | 41% | 23.2 | – | 13:01 |
Computed with the JPL DE421 ephemeris and Skyfield (JST). Illumination and age are for 12:00 JST; moonrise and moonset are for Tokyo. Distances are centre to centre. "Supermoon" is not a formal astronomical term.
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Daily moon phase, illumination, age and Tokyo moonrise/moonset for October 1991. Full moon: Oct 23 (376,501 km away).