Moon Phases in San Mateo
Moonrise, Moonset, Phase, Illumination and Age for September1923
Today's Moon
Calculated for 2026-05-17
- Moonrise
- 06:08
- Phase
- New Moon
- Age of Moon
- 0.4 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 |
|---|---|---|---|---|---|---|
| Sep 1 Sat | 22:32 | 10:21 | Waning Gibbous | 72% | 20 days | 398939 km |
| Sep 2 Sun | 23:17 | 11:08 | Last Quarter | 62% | 21 days | 394783 km |
| Sep 3 Mon | - | 11:55 | Last Quarter | 52% | 22 days | 389707 km |
| Sep 4 Tue | 00:04 | 12:44 | Last Quarter | 41% | 23 days | 383922 km |
| Sep 5 Wed | 00:53 | 13:35 | Last Quarter | 31% | 24 days | 377766 km |
| Sep 6 Thu | 01:44 | 14:26 | Waning Crescent | 22% | 25 days | 371669 km |
| Sep 7 Fri | 02:37 | 15:18 | Waning Crescent | 14% | 26 days | 366111 km |
| Sep 8 Sat | 03:31 | 16:10 | Waning Crescent | 7% | 27 days | 363104 km |
| Sep 9 Sun | 04:26 | 17:02 | Waning Crescent | 3% | 28 days | 363104 km |
| Sep 10 Mon | 05:22 | 17:54 | New Moon | 0% | 29 days | 363104 km |
| Sep 11 Tue | 06:18 | 18:45 | Waxing Crescent | 0% | 0.4 days | 363104 km |
| Sep 12 Wed | 07:15 | 19:38 | Waxing Crescent | 2% | 1.4 days | 363104 km |
| Sep 13 Thu | 08:11 | 20:30 | Waxing Crescent | 7% | 2.4 days | 363701 km |
| Sep 14 Fri | 09:09 | 21:25 | Waxing Crescent | 13% | 3.4 days | 368899 km |
| Sep 15 Sat | 10:07 | 22:19 | Waxing Crescent | 21% | 4.4 days | 374932 km |
| Sep 16 Sun | 11:04 | 23:15 | Waxing Crescent | 30% | 5.4 days | 381299 km |
| Sep 17 Mon | 12:02 | - | First Quarter | 40% | 6.4 days | 387510 km |
| Sep 18 Tue | 12:57 | 00:10 | First Quarter | 51% | 7.4 days | 393138 km |
| Sep 19 Wed | 13:51 | 01:06 | First Quarter | 61% | 8.4 days | 397865 km |
| Sep 20 Thu | 14:41 | 01:59 | Waxing Gibbous | 71% | 9.4 days | 401507 km |
| Sep 21 Fri | 15:30 | 02:51 | Waxing Gibbous | 80% | 10.4 days | 404012 km |
| Sep 22 Sat | 16:15 | 03:42 | Waxing Gibbous | 88% | 11.4 days | 405442 km |
| Sep 23 Sun | 16:59 | 04:29 | Waxing Gibbous | 94% | 12.4 days | 405696 km |
| Sep 24 Mon | 17:42 | 05:16 | Waxing Gibbous | 98% | 13.4 days | 405648 km |
| Sep 25 Tue | 18:23 | 06:01 | Full Moon | 100% | 14.4 days | 404730 km |
| Sep 26 Wed | 19:04 | 06:46 | Waning Gibbous | 99% | 15.4 days | 403274 km |
| Sep 27 Thu | 19:46 | 07:31 | Waning Gibbous | 97% | 16.4 days | 401312 km |
| Sep 28 Fri | 20:28 | 08:16 | Waning Gibbous | 92% | 17.4 days | 398824 km |
| Sep 29 Sat | 21:12 | 09:02 | Waning Gibbous | 85% | 18.4 days | 395766 km |
| Sep 30 Sun | 21:58 | 09:49 | Waning Gibbous | 77% | 19.4 days | 392105 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.