Moon Phases in San Juan
Moonrise, Moonset, Phase, Illumination and Age for December1937
Today's Moon
Calculated for 2026-05-13
- Moonrise
- 03:06
- Phase
- Waning Crescent
- Age of Moon
- 25.4 days
- Moonset
- 15:44
- Illumination
- 18%
- Next Full Moon
- 2026-05-31
Today's Sun
Calculated for 2026-05-13
- Sunrise
- 05:50
- Sunset
- 18:51
- Day Length
- 13h 1m
| Date | Moonrise | Moonset | Phase | Illumination | Age | Distance |
|---|---|---|---|---|---|---|
| Dec 1 Wed | 05:29 | 16:53 | Waning Crescent | 4% | 27.6 days | 363104 km |
| Dec 2 Thu | 06:19 | 17:40 | New Moon | 1% | 28.6 days | 363104 km |
| Dec 3 Fri | 07:09 | 18:28 | Waxing Crescent | 0% | 0.1 days | 363104 km |
| Dec 4 Sat | 07:56 | 19:18 | Waxing Crescent | 1% | 1.1 days | 363104 km |
| Dec 5 Sun | 08:42 | 20:08 | Waxing Crescent | 5% | 2.1 days | 363104 km |
| Dec 6 Mon | 09:26 | 20:59 | Waxing Crescent | 10% | 3.1 days | 366619 km |
| Dec 7 Tue | 10:06 | 21:50 | Waxing Crescent | 18% | 4.1 days | 372246 km |
| Dec 8 Wed | 10:46 | 22:40 | Waxing Crescent | 26% | 5.1 days | 378425 km |
| Dec 9 Thu | 11:24 | 23:31 | First Quarter | 36% | 6.1 days | 384662 km |
| Dec 10 Fri | 12:02 | - | First Quarter | 47% | 7.1 days | 390502 km |
| Dec 11 Sat | 12:41 | 00:23 | First Quarter | 57% | 8.1 days | 395582 km |
| Dec 12 Sun | 13:23 | 01:17 | First Quarter | 67% | 9.1 days | 399664 km |
| Dec 13 Mon | 14:08 | 02:14 | Waxing Gibbous | 77% | 10.1 days | 402642 km |
| Dec 14 Tue | 14:58 | 03:14 | Waxing Gibbous | 85% | 11.1 days | 404536 km |
| Dec 15 Wed | 15:53 | 04:17 | Waxing Gibbous | 92% | 12.1 days | 405454 km |
| Dec 16 Thu | 16:54 | 05:24 | Waxing Gibbous | 97% | 13.1 days | 405548 km |
| Dec 17 Fri | 17:59 | 06:29 | Full Moon | 99% | 14.1 days | 404971 km |
| Dec 18 Sat | 19:05 | 07:32 | Waning Gibbous | 100% | 15.1 days | 403834 km |
| Dec 19 Sun | 20:10 | 08:29 | Waning Gibbous | 98% | 16.1 days | 402188 km |
| Dec 20 Mon | 21:13 | 09:21 | Waning Gibbous | 94% | 17.1 days | 400027 km |
| Dec 21 Tue | 22:11 | 10:07 | Waning Gibbous | 88% | 18.1 days | 397304 km |
| Dec 22 Wed | 23:07 | 10:50 | Waning Gibbous | 81% | 19.1 days | 393971 km |
| Dec 23 Thu | - | 11:31 | Waning Gibbous | 71% | 20.1 days | 390018 km |
| Dec 24 Fri | 00:00 | 12:10 | Last Quarter | 61% | 21.1 days | 385508 km |
| Dec 25 Sat | 00:52 | 12:48 | Last Quarter | 51% | 22.1 days | 380597 km |
| Dec 26 Sun | 01:43 | 13:28 | Last Quarter | 40% | 23.1 days | 375541 km |
| Dec 27 Mon | 02:34 | 14:08 | Waning Crescent | 30% | 24.1 days | 370671 km |
| Dec 28 Tue | 03:25 | 14:52 | Waning Crescent | 21% | 25.1 days | 366366 km |
| Dec 29 Wed | 04:15 | 15:37 | Waning Crescent | 13% | 26.1 days | 363104 km |
| Dec 30 Thu | 05:05 | 16:24 | Waning Crescent | 7% | 27.1 days | 363104 km |
| Dec 31 Fri | 05:53 | 17:14 | Waning Crescent | 2% | 28.1 days | 363104 km |
* Moon Phase: The shape of the illuminated (sunlit) portion of the Moon as seen by an observer on Earth.
* Illumination: The percentage of the Moon's surface illuminated by the Sun.
* Moon Age: The number of days since the last New Moon.