Sunrise and sunset times in Foster City, CA
EditCheck out today's and tomorrow's sunrise and sunset times in Foster City, as well as the whole calendar for October 2026.
Noticed slightly different times? We upgraded our calculations
Today
October 18, 2026. Current time: 4:16:28 pm
Night ends at 5:53 am5:53:05 am
Start of astronomical twilight: the Sun is 18° below the horizon and the sky begins to brighten, too faintly to notice in a city.·First light at 6:54 am6:53:49 am
Start of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light.
Sunrise time: 7:20:17 am PDTWhen the top edge of the Sun appears over a flat, clear horizon. Behind hills, mountains or buildings the Sun appears a few minutes later (or more in a valley).
Sunset time: 6:27:28 pm PDTWhen the top edge of the Sun disappears below a flat, clear horizon. Behind hills, mountains or buildings the Sun disappears a few minutes earlier (or more in a valley).
Dark at 6:54 pm6:53:55 pm
End of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.·Night at 7:55 pm7:54:35 pm
End of astronomical twilight: the Sun is 18° below the horizon and the sky is dark enough to see the faintest stars. In a city it looks dark sooner.
Foster City Tides
High 6:09 pm 6.4 ftLow 2:10 am 0.7 ftBay Slough, west end
| Low tide | 1:06 am | 0.6 ft | 0.19 m |
|---|---|---|---|
| High tide | 8:35 am | 5.9 ft | 1.79 m |
| Low tide | 1:53 pm | 3.5 ft | 1.08 m |
| High tide | 6:09 pm | 6.4 ft | 1.96 m |
| Low tide | 2:10 am | 0.7 ft | 0.20 m |
|---|---|---|---|
| High tide | 9:15 am | 6.1 ft | 1.86 m |
| Low tide | 2:59 pm | 3.2 ft | 0.97 m |
| High tide | 7:23 pm | 6.3 ft | 1.92 m |
Tide predictions: NOAA, station 9414483, Bay Slough, west end (subordinate station: highs and lows from NOAA, curve between them interpolated), heights above Mean Lower Low Water, local time. Predictions, not observations: wind and pressure change the real water level. Not for navigation.
Sun position chart
Now · Sun altitude: 23.03° · Azimuth: 235.8° (SW)
Daylight Golden Hour Dawn & dusk (civil twilight) Night
Day length: 11 hours, 7 minutes
2 hours, 11 minutes left for today's sunset in Foster City
Moon rose on Oct 18 at 2:39 pm
Moon will set on Oct 19 at 12:29 amMoon phase: 🌓 First Quarter (53%)🌕 Full moon: Oct 25 at 9:11 pm · 🌑 New moon: Nov 8 at 11:02 pmTomorrow
October 19, 2026
Night ends at 5:54 am5:53:58 am
Start of astronomical twilight: the Sun is 18° below the horizon and the sky begins to brighten, too faintly to notice in a city.·First light at 6:55 am6:54:45 am
Start of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light.
Sunrise time: 7:21:15 am PDTWhen the top edge of the Sun appears over a flat, clear horizon. Behind hills, mountains or buildings the Sun appears a few minutes later (or more in a valley).
Sunset time: 6:26:08 pm PDTWhen the top edge of the Sun disappears below a flat, clear horizon. Behind hills, mountains or buildings the Sun disappears a few minutes earlier (or more in a valley).
Dark at 6:53 pm6:52:38 pm
End of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.·Night at 7:53 pm7:53:19 pm
End of astronomical twilight: the Sun is 18° below the horizon and the sky is dark enough to see the faintest stars. In a city it looks dark sooner.
Day length: 11 hours, 4 minutes
Tomorrow will be 2 minutes shorter than today in Foster City
Moon will set on Oct 19 at 12:29 am Moon will rise on Oct 19 at 3:11 pmMoon phase: 🌔 Waxing Gibbous (65%)
- Foster City, California
- Latitude: 37.558544 (North)
- Longitude: -122.27108 (West)
- Time zone: Pacific Daylight Time (PDT, UTC−7)
Shortest day in Foster City, CA
The shortest day of the year will be in 2 months and 3 days, during the winter solstice on December 21, 2026, with a daylight length of 9 hours, 34 minutes.Longest day in Foster City, CA
The longest day of the year was around 3 months ago, during the summer solstice on June 21, 2026, with a daylight length of 14 hours, 45 minutes.
October 2026 - Foster City, California - Sunrise and sunset calendar
Sunrise and sunset times, civil twilight start and end times as well as solar noon, and day length for every day of October in Foster City.
All times are in Foster City's time: Pacific Daylight Time (PDT, UTC−7).
The day length shortens by 1 hour, 8 minutes over the course of October 2026 in Foster City, CA - from 11 hours, 47 minutes on the first day to 10 hours, 38 minutes on the last day.
| Day | First LightStart of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light. | SunriseWhen the top edge of the Sun appears over a flat, clear horizon. Behind hills, mountains or buildings the Sun appears a few minutes later (or more in a valley). | Sunrise Variation |
SunsetWhen the top edge of the Sun disappears below a flat, clear horizon. Behind hills, mountains or buildings the Sun disappears a few minutes earlier (or more in a valley). | Sunset Variation |
Last LightEnd of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors. | Day Length | Day Length Variation | Solar NoonTime of day when the sun reaches its highest point in the sky. | Max Sun Altitude | Nautical Twilight Start | Nautical Twilight End | Astronomical Twilight Start | Astronomical Twilight End | Night LengthCalculated from this day's sunset to the next day's sunrise. | Moon phase | Solar Midnight | Sun DeclinationThe latitude where the Sun is directly overhead at solar noon (the Sun's declination). It moves between the two tropics through the year. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thu, Oct 1 | Twilight startStart of civil twilight: the Sun is 6° below the horizon, and there is enough light to be outdoors without artificial light.6:38:41 am | 7:04:48 am | +53s | 6:51:55 pm | -1m 31s | Twilight endEnd of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.7:17:59 pm | 11h 47m 7s | -2m 23s | Solar noonTime of day when the sun reaches its highest point in the sky.12:58:39 pm | 49.01° | 6:08:21 am | 7:48:16 pm | 5:37:47 am | 8:18:45 pm | Night lengthCalculated from this day's sunset to the next day's sunrise.12h 13m 45s | 🌖 (64%)Waning Gibbous: 64% illuminated at midnight, at the end of the day | 12:58:49 am | 3.4° S |
| Fri, Oct 2 | 6:39:33 am | 7:05:40 am | +52s | 6:50:24 pm | -1m 31s | 7:16:29 pm | 11h 44m 44s | -2m 23s | 12:58:20 pm | 48.62° | 6:09:14 am | 7:46:45 pm | 5:38:42 am | 8:17:12 pm | 12h 16m 9s | 🌖 (53%)Waning Gibbous: 53% illuminated at midnight, at the end of the day | 12:58:30 am | 3.8° S |
| Sat, Oct 3 | 6:40:26 am | 7:06:33 am | +53s | 6:48:54 pm | -1m 30s | 7:14:59 pm | 11h 42m 21s | -2m 23s | 12:58:01 pm | 48.24° | 6:10:07 am | 7:45:15 pm | 5:39:37 am | 8:15:40 pm | 12h 18m 32s | 🌗 (42%) Last quarter at 6:25 amLast quarter at 6:25 am. At midnight, at the end of the day: 42% illuminated |
12:58:11 am | 4.2° S |
| Sun, Oct 4 | 6:41:18 am | 7:07:26 am | +53s | 6:47:24 pm | -1m 30s | 7:13:30 pm | 11h 39m 58s | -2m 23s | 12:57:42 pm | 47.85° | 6:10:59 am | 7:43:45 pm | 5:40:31 am | 8:14:09 pm | 12h 20m 55s | 🌘 (31%)Waning Crescent: 31% illuminated at midnight, at the end of the day | 12:57:51 am | 4.6° S |
| Mon, Oct 5 | 6:42:10 am | 7:08:19 am | +53s | 6:45:55 pm | -1m 29s | 7:12:01 pm | 11h 37m 36s | -2m 23s | 12:57:24 pm | 47.47° | 6:11:52 am | 7:42:16 pm | 5:41:25 am | 8:12:39 pm | 12h 23m 17s | 🌘 (21%)Waning Crescent: 21% illuminated at midnight, at the end of the day | 12:57:33 am | 5.0° S |
| Tue, Oct 6 | 6:43:03 am | 7:09:12 am | +53s | 6:44:26 pm | -1m 29s | 7:10:33 pm | 11h 35m 14s | -2m 22s | 12:57:06 pm | 47.08° | 6:12:45 am | 7:40:48 pm | 5:42:20 am | 8:11:10 pm | 12h 25m 40s | 🌘 (13%)Waning Crescent: 13% illuminated at midnight, at the end of the day | 12:57:15 am | 5.4° S |
| Wed, Oct 7 | 6:43:55 am | 7:10:06 am | +54s | 6:42:57 pm | -1m 29s | 7:09:06 pm | 11h 32m 51s | -2m 22s | 12:56:49 pm | 46.70° | 6:13:37 am | 7:39:21 pm | 5:43:14 am | 8:09:41 pm | 12h 28m 3s | 🌘 (6%)Waning Crescent: 6% illuminated at midnight, at the end of the day | 12:56:58 am | 5.7° S |
| Thu, Oct 8 | 6:44:48 am | 7:11:00 am | +54s | 6:41:30 pm | -1m 27s | 7:07:39 pm | 11h 30m 30s | -2m 22s | 12:56:32 pm | 46.32° | 6:14:30 am | 7:37:55 pm | 5:44:08 am | 8:08:14 pm | 12h 30m 24s | 🌘 (2%)Waning Crescent: 2% illuminated at midnight, at the end of the day | 12:56:41 am | 6.1° S |
| Fri, Oct 9 | 6:45:41 am | 7:11:54 am | +54s | 6:40:02 pm | -1m 28s | 7:06:13 pm | 11h 28m 8s | -2m 22s | 12:56:15 pm | 45.94° | 6:15:23 am | 7:36:29 pm | 5:45:01 am | 8:06:47 pm | 12h 32m 47s | 🌘 (0.2%)Waning Crescent: 0.2% illuminated at midnight, at the end of the day | 12:56:23 am | 6.5° S |
| Sat, Oct 10 | 6:46:35 am | 7:12:49 am | +55s | 6:38:36 pm | -1m 26s | 7:04:48 pm | 11h 25m 47s | -2m 21s | 12:55:59 pm | 45.56° | 6:16:16 am | 7:35:04 pm | 5:45:55 am | 8:05:21 pm | 12h 35m 8s | 🌑 (1%) New moon at 8:50 amNew moon at 8:50 am. At midnight, at the end of the day: 1% illuminated |
12:56:07 am | 6.9° S |
| Sun, Oct 11 | 6:47:28 am | 7:13:44 am | +55s | 6:37:10 pm | -1m 26s | 7:03:23 pm | 11h 23m 26s | -2m 21s | 12:55:43 pm | 45.18° | 6:17:09 am | 7:33:40 pm | 5:46:49 am | 8:03:57 pm | 12h 37m 29s | 🌒 (3%)Waxing Crescent: 3% illuminated at midnight, at the end of the day | 12:55:51 am | 7.3° S |
| Mon, Oct 12 | 6:48:22 am | 7:14:39 am | +55s | 6:35:44 pm | -1m 26s | 7:02:00 pm | 11h 21m 5s | -2m 21s | 12:55:28 pm | 44.81° | 6:18:02 am | 7:32:17 pm | 5:47:43 am | 8:02:33 pm | 12h 39m 51s | 🌒 (7%)Waxing Crescent: 7% illuminated at midnight, at the end of the day | 12:55:35 am | 7.6° S |
| Tue, Oct 13 | 6:49:16 am | 7:15:35 am | +56s | 6:34:20 pm | -1m 24s | 7:00:37 pm | 11h 18m 45s | -2m 20s | 12:55:14 pm | 44.44° | 6:18:55 am | 7:30:55 pm | 5:48:36 am | 8:01:11 pm | 12h 42m 10s | 🌒 (13%)Waxing Crescent: 13% illuminated at midnight, at the end of the day | 12:55:22 am | 8.0° S |
| Wed, Oct 14 | 6:50:10 am | 7:16:30 am | +55s | 6:32:56 pm | -1m 24s | 6:59:14 pm | 11h 16m 26s | -2m 20s | 12:54:59 pm | 44.06° | 6:19:48 am | 7:29:34 pm | 5:49:30 am | 7:59:49 pm | 12h 44m 31s | 🌒 (20%)Waxing Crescent: 20% illuminated at midnight, at the end of the day | 12:55:06 am | 8.4° S |
| Thu, Oct 15 | 6:51:04 am | 7:17:27 am | +57s | 6:31:33 pm | -1m 23s | 6:57:53 pm | 11h 14m 6s | -2m 19s | 12:54:46 pm | 43.69° | 6:20:42 am | 7:28:14 pm | 5:50:24 am | 7:58:29 pm | 12h 46m 50s | 🌒 (28%)Waxing Crescent: 28% illuminated at midnight, at the end of the day | 12:54:53 am | 8.7° S |
| Fri, Oct 16 | 6:51:59 am | 7:18:23 am | +56s | 6:30:10 pm | -1m 23s | 6:56:33 pm | 11h 11m 47s | -2m 19s | 12:54:33 pm | 43.33° | 6:21:35 am | 7:26:54 pm | 5:51:17 am | 7:57:10 pm | 12h 49m 10s | 🌒 (37%)Waxing Crescent: 37% illuminated at midnight, at the end of the day | 12:54:39 am | 9.1° S |
| Sat, Oct 17 | 6:52:54 am | 7:19:20 am | +57s | 6:28:49 pm | -1m 21s | 6:55:13 pm | 11h 9m 29s | -2m 18s | 12:54:21 pm | 42.96° | 6:22:29 am | 7:25:36 pm | 5:52:11 am | 7:55:52 pm | 12h 51m 28s | 🌒 (46%)Waxing Crescent: 46% illuminated at midnight, at the end of the day | 12:54:27 am | 9.5° S |
| Sun, Oct 18 | 6:53:49 am | 7:20:17 am | +57s | 6:27:28 pm | -1m 21s | 6:53:55 pm | 11h 7m 11s | -2m 18s | 12:54:09 pm | 42.60° | 6:23:23 am | 7:24:19 pm | 5:53:05 am | 7:54:35 pm | 12h 53m 47s | 🌓 (56%) First quarter at 9:12 amFirst quarter at 9:12 am. At midnight, at the end of the day: 56% illuminated |
12:54:15 am | 9.8° S |
| Mon, Oct 19 | 6:54:45 am | 7:21:15 am | +58s | 6:26:08 pm | -1m 20s | 6:52:38 pm | 11h 4m 53s | -2m 17s | 12:53:58 pm | 42.24° | 6:24:17 am | 7:23:03 pm | 5:53:58 am | 7:53:19 pm | 12h 56m 5s | 🌔 (65%)Waxing Gibbous: 65% illuminated at midnight, at the end of the day | 12:54:04 am | 10.2° S |
| Tue, Oct 20 | 6:55:40 am | 7:22:13 am | +58s | 6:24:50 pm | -1m 18s | 6:51:21 pm | 11h 2m 37s | -2m 17s | 12:53:47 pm | 41.88° | 6:25:11 am | 7:21:49 pm | 5:54:52 am | 7:52:05 pm | 12h 58m 21s | 🌔 (74%)Waxing Gibbous: 74% illuminated at midnight, at the end of the day | 12:53:52 am | 10.6° S |
| Wed, Oct 21 | 6:56:36 am | 7:23:11 am | +58s | 6:23:32 pm | -1m 18s | 6:50:06 pm | 11h 0m 21s | -2m 16s | 12:53:37 pm | 41.52° | 6:26:05 am | 7:20:35 pm | 5:55:46 am | 7:50:52 pm | 13h 0m 38s | 🌔 (83%)Waxing Gibbous: 83% illuminated at midnight, at the end of the day | 12:53:42 am | 10.9° S |
| Thu, Oct 22 | 6:57:32 am | 7:24:10 am | +59s | 6:22:15 pm | -1m 17s | 6:48:51 pm | 10h 58m 5s | -2m 16s | 12:53:28 pm | 41.17° | 6:27:00 am | 7:19:22 pm | 5:56:39 am | 7:49:40 pm | 13h 2m 54s | 🌔 (90%)Waxing Gibbous: 90% illuminated at midnight, at the end of the day | 12:53:33 am | 11.3° S |
| Fri, Oct 23 | 6:58:29 am | 7:25:09 am | +59s | 6:20:59 pm | -1m 16s | 6:47:38 pm | 10h 55m 50s | -2m 15s | 12:53:19 pm | 40.82° | 6:27:54 am | 7:18:11 pm | 5:57:33 am | 7:48:30 pm | 13h 5m 10s | 🌔 (95%)Waxing Gibbous: 95% illuminated at midnight, at the end of the day | 12:53:23 am | 11.6° S |
| Sat, Oct 24 | 6:59:26 am | 7:26:09 am | +1m 0s | 6:19:44 pm | -1m 15s | 6:46:26 pm | 10h 53m 35s | -2m 14s | 12:53:12 pm | 40.47° | 6:28:49 am | 7:17:01 pm | 5:58:27 am | 7:47:21 pm | 13h 7m 24s | 🌔 (99%)Waxing Gibbous: 99% illuminated at midnight, at the end of the day | 12:53:16 am | 12.0° S |
| Sun, Oct 25 | 7:00:22 am | 7:27:08 am | +59s | 6:18:31 pm | -1m 13s | 6:45:16 pm | 10h 51m 23s | -2m 13s | 12:53:05 pm | 40.13° | 6:29:44 am | 7:15:53 pm | 5:59:21 am | 7:46:13 pm | 13h 9m 37s | 🌕 (99.8%) Full moon at 9:11 pmFull moon at 9:11 pm. At midnight, at the end of the day: 99.8% illuminated |
12:53:09 am | 12.3° S |
| Mon, Oct 26 | 7:01:20 am | 7:28:08 am | +1m 0s | 6:17:18 pm | -1m 13s | 6:44:06 pm | 10h 49m 10s | -2m 13s | 12:52:58 pm | 39.79° | 6:30:39 am | 7:14:45 pm | 6:00:15 am | 7:45:07 pm | 13h 11m 51s | 🌖 (98%)Waning Gibbous: 98% illuminated at midnight, at the end of the day | 12:53:01 am | 12.7° S |
| Tue, Oct 27 | 7:02:17 am | 7:29:09 am | +1m 1s | 6:16:07 pm | -1m 11s | 6:42:58 pm | 10h 46m 58s | -2m 12s | 12:52:53 pm | 39.45° | 6:31:34 am | 7:13:39 pm | 6:01:09 am | 7:44:02 pm | 13h 14m 2s | 🌖 (94%)Waning Gibbous: 94% illuminated at midnight, at the end of the day | 12:52:56 am | 13.0° S |
| Wed, Oct 28 | 7:03:15 am | 7:30:09 am | +1m 0s | 6:14:57 pm | -1m 10s | 6:41:51 pm | 10h 44m 48s | -2m 11s | 12:52:48 pm | 39.12° | 6:32:30 am | 7:12:34 pm | 6:02:04 am | 7:42:59 pm | 13h 16m 14s | 🌖 (87%)Waning Gibbous: 87% illuminated at midnight, at the end of the day | 12:52:50 am | 13.3° S |
| Thu, Oct 29 | 7:04:13 am | 7:31:11 am | +1m 2s | 6:13:48 pm | -1m 9s | 6:40:45 pm | 10h 42m 37s | -2m 10s | 12:52:44 pm | 38.79° | 6:33:25 am | 7:11:31 pm | 6:02:58 am | 7:41:57 pm | 13h 18m 24s | 🌖 (78%)Waning Gibbous: 78% illuminated at midnight, at the end of the day | 12:52:46 am | 13.7° S |
| Fri, Oct 30 | 7:05:11 am | 7:32:12 am | +1m 1s | 6:12:41 pm | -1m 7s | 6:39:40 pm | 10h 40m 29s | -2m 9s | 12:52:41 pm | 38.46° | 6:34:21 am | 7:10:29 pm | 6:03:52 am | 7:40:56 pm | 13h 20m 32s | 🌖 (68%)Waning Gibbous: 68% illuminated at midnight, at the end of the day | 12:52:43 am | 14.0° S |
| Sat, Oct 31 | 7:06:10 am | 7:33:13 am | +1m 1s | 6:11:34 pm | -1m 7s | 6:38:37 pm | 10h 38m 21s | -2m 8s | 12:52:38 pm | 38.14° | 6:35:17 am | 7:09:29 pm | 6:04:47 am | 7:39:58 pm | 13h 22m 41s | 🌖 (56%)Waning Gibbous: 56% illuminated at midnight, at the end of the day | 12:52:39 am | 14.3° S |
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Year distribution of sunrise and sunset times in Foster City, CA - 2026
The following graph shows sunrise and sunset times in Foster City, CA for every day of the year. There are two jumps in the graph that represent the hour change for Daylight Saving Time (DST) in Foster City, CA.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Foster City, CA
In Foster City, CA, the earliest sunrise of 2026 is on June 13 at 5:47 am, while the latest sunrise is on October 31 at 7:33 am. The earliest sunset is on December 6 at 4:50 pm, and the latest sunset is on June 27 at 8:34 pm.
Foster City, CA gets 5h 11m more daylight on the longest day than on the shortest one (14h 45m versus 9h 34m). Averaged over the whole year, a day lasts 12h 11m.
Foster City, CA Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Foster City. Throughout the year, it slowly traces this figure-eight:
Move along the curve to read the Sun's altitude and azimuth for any day of the year in Foster City.
Over the year, the 12:00 Sun swings between just 29° above the horizon (around Dec 21) and 75.7° (around Jun 18) in Foster City. The smaller loop sits at the top, the signature of a Northern Hemisphere analemma.
Detailed Analemma Chart
The technical chart below plots one dot per day, labels the first day of each month, marks the solstices, equinoxes, perihelion and aphelion, and draws the noon altitude of the equinoxes (90° minus your latitude) together with its ±23.4° seasonal limits.
Why does the figure look wider here than in the sky view above?
Both draw the same data, but with different conventions. The sky view uses the same scale on both axes, so it shows the analemma with its true proportions, as a camera would capture it: about 47° tall and only a few degrees wide. This chart, like most technical analemma diagrams, stretches each axis independently to fill the plot, expanding the narrow azimuth range several times so its day-to-day variation can actually be read. Also, azimuth is not sky distance: near the zenith, one degree of azimuth spans much less than one degree across the sky, which further widens the figure in this representation.
Places near Foster City, CA
These nearby towns and cities have almost the same sunrise and sunset times as Foster City, CA — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Belmont 3 miSan Mateo 3 miSan Carlos 4 miBurlingame 4 miRedwood City 5 miHillsborough 6 miMillbrae 7 miSFO - San Francisco International Airport 7 mi