Moon Phases in San Mateo
Moonrise, Moonset, Phase, Illumination and Age for December1927
Today's Moon
Calculated for 2026-05-17
- Moonrise
- 06:08
- Phase
- New Moon
- Age of Moon
- 0.2 days
- Moonset
- 19:07
- Illumination
- 0%
- Next Full Moon
- 2026-05-31
Today's Sun
Calculated for 2026-05-17
- Sunrise
- 05:33
- Sunset
- 18:00
- Day Length
- 12h 27m
| Date | Moonrise | Moonset | Phase | Illumination | Age | Distance |
|---|---|---|---|---|---|---|
| Dec 1 Thu | 11:49 | 23:59 | First Quarter | 44% | 6.9 days | 394274 km |
| Dec 2 Fri | 12:36 | - | First Quarter | 55% | 7.9 days | 388932 km |
| Dec 3 Sat | 13:23 | 00:52 | First Quarter | 65% | 8.9 days | 382920 km |
| Dec 4 Sun | 14:10 | 01:45 | Waxing Gibbous | 75% | 9.9 days | 376627 km |
| Dec 5 Mon | 14:59 | 02:38 | Waxing Gibbous | 84% | 10.9 days | 370520 km |
| Dec 6 Tue | 15:50 | 03:34 | Waxing Gibbous | 91% | 11.9 days | 365094 km |
| Dec 7 Wed | 16:45 | 04:33 | Waxing Gibbous | 96% | 12.9 days | 363104 km |
| Dec 8 Thu | 17:44 | 05:34 | Full Moon | 99% | 13.9 days | 363104 km |
| Dec 9 Fri | 18:45 | 06:37 | Waning Gibbous | 100% | 14.9 days | 363104 km |
| Dec 10 Sat | 19:46 | 07:40 | Waning Gibbous | 99% | 15.9 days | 363104 km |
| Dec 11 Sun | 20:45 | 08:38 | Waning Gibbous | 95% | 16.9 days | 363104 km |
| Dec 12 Mon | 21:41 | 09:33 | Waning Gibbous | 90% | 17.9 days | 364855 km |
| Dec 13 Tue | 22:31 | 10:23 | Waning Gibbous | 82% | 18.9 days | 370194 km |
| Dec 14 Wed | 23:19 | 11:08 | Waning Gibbous | 73% | 19.9 days | 376215 km |
| Dec 15 Thu | - | 11:49 | Last Quarter | 64% | 20.9 days | 382430 km |
| Dec 16 Fri | 00:04 | 12:28 | Last Quarter | 53% | 21.9 days | 388379 km |
| Dec 17 Sat | 00:47 | 13:06 | Last Quarter | 43% | 22.9 days | 393687 km |
| Dec 18 Sun | 01:30 | 13:44 | Last Quarter | 32% | 23.9 days | 398095 km |
| Dec 19 Mon | 02:12 | 14:23 | Waning Crescent | 23% | 24.9 days | 401475 km |
| Dec 20 Tue | 02:57 | 15:04 | Waning Crescent | 15% | 25.9 days | 403820 km |
| Dec 21 Wed | 03:43 | 15:48 | Waning Crescent | 8% | 26.9 days | 405218 km |
| Dec 22 Thu | 04:32 | 16:34 | Waning Crescent | 3% | 27.9 days | 405696 km |
| Dec 23 Fri | 05:23 | 17:25 | New Moon | 1% | 28.9 days | 405696 km |
| Dec 24 Sat | 06:16 | 18:17 | Waxing Crescent | 0% | 0.3 days | 405014 km |
| Dec 25 Sun | 07:11 | 19:13 | Waxing Crescent | 2% | 1.3 days | 403777 km |
| Dec 26 Mon | 08:05 | 20:08 | Waxing Crescent | 6% | 2.3 days | 401962 km |
| Dec 27 Tue | 08:57 | 21:03 | Waxing Crescent | 12% | 3.3 days | 399503 km |
| Dec 28 Wed | 09:47 | 21:56 | Waxing Crescent | 20% | 4.3 days | 396333 km |
| Dec 29 Thu | 10:34 | 22:48 | Waxing Crescent | 29% | 5.3 days | 392422 km |
| Dec 30 Fri | 11:20 | 23:40 | First Quarter | 39% | 6.3 days | 387817 km |
| Dec 31 Sat | 12:06 | - | First Quarter | 49% | 7.3 days | 382671 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.