Sunrise and sunset times in Diamond Bar, CA
EditCheck out today's and tomorrow's sunrise and sunset times in Diamond Bar, as well as the whole calendar for October 2026.
Noticed slightly different times? We upgraded our calculations
Today
October 18, 2026. Current time: 4:20:21 pm
Night ends at 5:35 am5:35:29 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 6:34 am6:33:36 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: 6:58:54 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: 6:13:14 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 6:39 pm6:38:31 pm
End of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.·Night at 7:37 pm7:36:34 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.
Sun position chart
Now · Sun altitude: 21.12° · Azimuth: 241.1° (SW)
Daylight Golden Hour Dawn & dusk (civil twilight) Night
Day length: 11 hours, 14 minutes
1 hour, 52 minutes left for today's sunset in Diamond Bar
Moon rose on Oct 18 at 2:11 pm
Moon will set on Oct 19 at 12:20 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 5:36 am5:36:14 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 6:34 am6:34:24 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: 6:59:44 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: 6:12:03 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 6:37 pm6:37:22 pm
End of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.·Night at 7:35 pm7:35:27 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, 12 minutes
Tomorrow will be 2 minutes shorter than today in Diamond Bar
Moon will set on Oct 19 at 12:20 am Moon will rise on Oct 19 at 2:45 pmMoon phase: 🌔 Waxing Gibbous (65%)
- Diamond Bar, California
- Latitude: 34.028622 (North)
- Longitude: -117.810333 (West)
- Time zone: Pacific Daylight Time (PDT, UTC−7)
Shortest day in Diamond Bar, 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, 53 minutes.Longest day in Diamond Bar, 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, 25 minutes.
October 2026 - Diamond Bar, 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 Diamond Bar.
All times are in Diamond Bar's time: Pacific Daylight Time (PDT, UTC−7).
The day length shortens by 1 hour over the course of October 2026 in Diamond Bar, CA - from 11 hours, 49 minutes on the first day to 10 hours, 49 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.6:20:54 am | 6:45:52 am | +43s | 6:35:14 pm | -1m 22s | Twilight endEnd of civil twilight: the Sun reaches 6° below the horizon, and from then on artificial light is needed outdoors.7:00:10 pm | 11h 49m 22s | -2m 6s | Solar noonTime of day when the sun reaches its highest point in the sky.12:40:49 pm | 52.54° | 5:51:54 am | 7:29:07 pm | 5:22:45 am | 7:58:13 pm | Night lengthCalculated from this day's sunset to the next day's sunrise.12h 11m 22s | 🌖 (64%)Waning Gibbous: 64% illuminated at midnight, at the end of the day | 12:40:59 am | 3.4° S |
| Fri, Oct 2 | 6:21:38 am | 6:46:36 am | +44s | 6:33:52 pm | -1m 22s | 6:58:48 pm | 11h 47m 16s | -2m 6s | 12:40:29 pm | 52.16° | 5:52:38 am | 7:27:45 pm | 5:23:30 am | 7:56:49 pm | 12h 13m 28s | 🌖 (53%)Waning Gibbous: 53% illuminated at midnight, at the end of the day | 12:40:39 am | 3.8° S |
| Sat, Oct 3 | 6:22:21 am | 6:47:20 am | +44s | 6:32:30 pm | -1m 22s | 6:57:27 pm | 11h 45m 10s | -2m 5s | 12:40:10 pm | 51.77° | 5:53:22 am | 7:26:24 pm | 5:24:16 am | 7:55:27 pm | 12h 15m 34s | 🌗 (42%) Last quarter at 6:25 amLast quarter at 6:25 am. At midnight, at the end of the day: 42% illuminated |
12:40:19 am | 4.2° S |
| Sun, Oct 4 | 6:23:04 am | 6:48:04 am | +44s | 6:31:09 pm | -1m 21s | 6:56:07 pm | 11h 43m 5s | -2m 5s | 12:39:52 pm | 51.38° | 5:54:06 am | 7:25:03 pm | 5:25:01 am | 7:54:05 pm | 12h 17m 39s | 🌘 (31%)Waning Crescent: 31% illuminated at midnight, at the end of the day | 12:40:01 am | 4.6° S |
| Mon, Oct 5 | 6:23:48 am | 6:48:48 am | +44s | 6:29:49 pm | -1m 20s | 6:54:47 pm | 11h 41m 1s | -2m 5s | 12:39:34 pm | 51.00° | 5:54:49 am | 7:23:43 pm | 5:25:46 am | 7:52:44 pm | 12h 19m 44s | 🌘 (21%)Waning Crescent: 21% illuminated at midnight, at the end of the day | 12:39:43 am | 5.0° S |
| Tue, Oct 6 | 6:24:32 am | 6:49:33 am | +45s | 6:28:28 pm | -1m 21s | 6:53:28 pm | 11h 38m 55s | -2m 5s | 12:39:16 pm | 50.62° | 5:55:33 am | 7:22:24 pm | 5:26:31 am | 7:51:24 pm | 12h 21m 50s | 🌘 (13%)Waning Crescent: 13% illuminated at midnight, at the end of the day | 12:39:25 am | 5.4° S |
| Wed, Oct 7 | 6:25:16 am | 6:50:18 am | +45s | 6:27:09 pm | -1m 19s | 6:52:09 pm | 11h 36m 51s | -2m 5s | 12:38:58 pm | 50.23° | 5:56:17 am | 7:21:05 pm | 5:27:15 am | 7:50:04 pm | 12h 23m 54s | 🌘 (6%)Waning Crescent: 6% illuminated at midnight, at the end of the day | 12:39:07 am | 5.7° S |
| Thu, Oct 8 | 6:26:00 am | 6:51:03 am | +45s | 6:25:49 pm | -1m 20s | 6:50:51 pm | 11h 34m 46s | -2m 4s | 12:38:41 pm | 49.85° | 5:57:01 am | 7:19:48 pm | 5:28:00 am | 7:48:46 pm | 12h 26m 0s | 🌘 (2%)Waning Crescent: 2% illuminated at midnight, at the end of the day | 12:38:49 am | 6.1° S |
| Fri, Oct 9 | 6:26:45 am | 6:51:49 am | +46s | 6:24:31 pm | -1m 18s | 6:49:33 pm | 11h 32m 42s | -2m 4s | 12:38:25 pm | 49.47° | 5:57:45 am | 7:18:31 pm | 5:28:45 am | 7:47:28 pm | 12h 28m 4s | 🌘 (0.2%)Waning Crescent: 0.2% illuminated at midnight, at the end of the day | 12:38:33 am | 6.5° S |
| Sat, Oct 10 | 6:27:30 am | 6:52:35 am | +46s | 6:23:13 pm | -1m 18s | 6:48:17 pm | 11h 30m 38s | -2m 4s | 12:38:09 pm | 49.10° | 5:58:30 am | 7:17:14 pm | 5:29:30 am | 7:46:12 pm | 12h 30m 8s | 🌑 (1%) New moon at 8:50 amNew moon at 8:50 am. At midnight, at the end of the day: 1% illuminated |
12:38:17 am | 6.9° S |
| Sun, Oct 11 | 6:28:15 am | 6:53:21 am | +46s | 6:21:55 pm | -1m 18s | 6:47:00 pm | 11h 28m 34s | -2m 4s | 12:37:53 pm | 48.72° | 5:59:14 am | 7:15:59 pm | 5:30:15 am | 7:44:56 pm | 12h 32m 13s | 🌒 (3%)Waxing Crescent: 3% illuminated at midnight, at the end of the day | 12:38:01 am | 7.3° S |
| Mon, Oct 12 | 6:29:00 am | 6:54:08 am | +47s | 6:20:39 pm | -1m 16s | 6:45:45 pm | 11h 26m 31s | -2m 3s | 12:37:38 pm | 48.34° | 5:59:58 am | 7:14:44 pm | 5:30:59 am | 7:43:41 pm | 12h 34m 16s | 🌒 (7%)Waxing Crescent: 7% illuminated at midnight, at the end of the day | 12:37:46 am | 7.6° S |
| Tue, Oct 13 | 6:29:45 am | 6:54:55 am | +47s | 6:19:23 pm | -1m 16s | 6:44:31 pm | 11h 24m 28s | -2m 3s | 12:37:23 pm | 47.97° | 6:00:43 am | 7:13:31 pm | 5:31:44 am | 7:42:27 pm | 12h 36m 19s | 🌒 (13%)Waxing Crescent: 13% illuminated at midnight, at the end of the day | 12:37:30 am | 8.0° S |
| Wed, Oct 14 | 6:30:31 am | 6:55:42 am | +47s | 6:18:07 pm | -1m 16s | 6:43:17 pm | 11h 22m 25s | -2m 3s | 12:37:09 pm | 47.60° | 6:01:28 am | 7:12:18 pm | 5:32:29 am | 7:41:14 pm | 12h 38m 22s | 🌒 (20%)Waxing Crescent: 20% illuminated at midnight, at the end of the day | 12:37:16 am | 8.4° S |
| Thu, Oct 15 | 6:31:17 am | 6:56:29 am | +47s | 6:16:53 pm | -1m 14s | 6:42:04 pm | 11h 20m 24s | -2m 2s | 12:36:56 pm | 47.23° | 6:02:13 am | 7:11:06 pm | 5:33:14 am | 7:40:03 pm | 12h 40m 24s | 🌒 (28%)Waxing Crescent: 28% illuminated at midnight, at the end of the day | 12:37:03 am | 8.7° S |
| Fri, Oct 16 | 6:32:03 am | 6:57:17 am | +48s | 6:15:39 pm | -1m 14s | 6:40:52 pm | 11h 18m 22s | -2m 2s | 12:36:43 pm | 46.86° | 6:02:58 am | 7:09:55 pm | 5:33:59 am | 7:38:52 pm | 12h 42m 27s | 🌒 (37%)Waxing Crescent: 37% illuminated at midnight, at the end of the day | 12:36:50 am | 9.1° S |
| Sat, Oct 17 | 6:32:50 am | 6:58:06 am | +49s | 6:14:26 pm | -1m 13s | 6:39:41 pm | 11h 16m 20s | -2m 1s | 12:36:30 pm | 46.50° | 6:03:43 am | 7:08:46 pm | 5:34:44 am | 7:37:43 pm | 12h 44m 28s | 🌒 (46%)Waxing Crescent: 46% illuminated at midnight, at the end of the day | 12:36:36 am | 9.5° S |
| Sun, Oct 18 | 6:33:36 am | 6:58:54 am | +48s | 6:13:14 pm | -1m 12s | 6:38:31 pm | 11h 14m 20s | -2m 1s | 12:36:18 pm | 46.13° | 6:04:29 am | 7:07:37 pm | 5:35:29 am | 7:36:34 pm | 12h 46m 30s | 🌓 (56%) First quarter at 9:12 amFirst quarter at 9:12 am. At midnight, at the end of the day: 56% illuminated |
12:36:24 am | 9.8° S |
| Mon, Oct 19 | 6:34:24 am | 6:59:44 am | +50s | 6:12:03 pm | -1m 11s | 6:37:22 pm | 11h 12m 19s | -2m 0s | 12:36:07 pm | 45.77° | 6:05:15 am | 7:06:29 pm | 5:36:14 am | 7:35:27 pm | 12h 48m 30s | 🌔 (65%)Waxing Gibbous: 65% illuminated at midnight, at the end of the day | 12:36:12 am | 10.2° S |
| Tue, Oct 20 | 6:35:11 am | 7:00:33 am | +49s | 6:10:52 pm | -1m 11s | 6:36:13 pm | 11h 10m 19s | -2m 0s | 12:35:57 pm | 45.41° | 6:06:00 am | 7:05:22 pm | 5:37:00 am | 7:34:21 pm | 12h 50m 31s | 🌔 (74%)Waxing Gibbous: 74% illuminated at midnight, at the end of the day | 12:36:02 am | 10.6° S |
| Wed, Oct 21 | 6:35:59 am | 7:01:23 am | +50s | 6:09:43 pm | -1m 9s | 6:35:06 pm | 11h 8m 20s | -1m 59s | 12:35:47 pm | 45.06° | 6:06:47 am | 7:04:17 pm | 5:37:45 am | 7:33:16 pm | 12h 52m 30s | 🌔 (83%)Waxing Gibbous: 83% illuminated at midnight, at the end of the day | 12:35:52 am | 10.9° S |
| Thu, Oct 22 | 6:36:47 am | 7:02:13 am | +50s | 6:08:35 pm | -1m 8s | 6:34:00 pm | 11h 6m 22s | -1m 59s | 12:35:38 pm | 44.71° | 6:07:33 am | 7:03:12 pm | 5:38:31 am | 7:32:13 pm | 12h 54m 29s | 🌔 (90%)Waxing Gibbous: 90% illuminated at midnight, at the end of the day | 12:35:43 am | 11.3° S |
| Fri, Oct 23 | 6:37:35 am | 7:03:04 am | +51s | 6:07:27 pm | -1m 8s | 6:32:55 pm | 11h 4m 23s | -1m 58s | 12:35:29 pm | 44.36° | 6:08:19 am | 7:02:09 pm | 5:39:17 am | 7:31:10 pm | 12h 56m 28s | 🌔 (95%)Waxing Gibbous: 95% illuminated at midnight, at the end of the day | 12:35:33 am | 11.6° S |
| Sat, Oct 24 | 6:38:24 am | 7:03:55 am | +51s | 6:06:21 pm | -1m 6s | 6:31:51 pm | 11h 2m 26s | -1m 57s | 12:35:21 pm | 44.01° | 6:09:06 am | 7:01:07 pm | 5:40:02 am | 7:30:09 pm | 12h 58m 25s | 🌔 (99%)Waxing Gibbous: 99% illuminated at midnight, at the end of the day | 12:35:25 am | 12.0° S |
| Sun, Oct 25 | 6:39:13 am | 7:04:46 am | +51s | 6:05:15 pm | -1m 6s | 6:30:48 pm | 11h 0m 29s | -1m 57s | 12:35:14 pm | 43.66° | 6:09:53 am | 7:00:06 pm | 5:40:48 am | 7:29:10 pm | 13h 0m 23s | 🌕 (99.8%) Full moon at 9:11 pmFull moon at 9:11 pm. At midnight, at the end of the day: 99.8% illuminated |
12:35:17 am | 12.3° S |
| Mon, Oct 26 | 6:40:02 am | 7:05:38 am | +52s | 6:04:11 pm | -1m 4s | 6:29:47 pm | 10h 58m 33s | -1m 56s | 12:35:08 pm | 43.32° | 6:10:41 am | 6:59:07 pm | 5:41:35 am | 7:28:11 pm | 13h 2m 19s | 🌖 (98%)Waning Gibbous: 98% illuminated at midnight, at the end of the day | 12:35:11 am | 12.6° S |
| Tue, Oct 27 | 6:40:51 am | 7:06:30 am | +52s | 6:03:08 pm | -1m 3s | 6:28:46 pm | 10h 56m 38s | -1m 55s | 12:35:02 pm | 42.99° | 6:11:28 am | 6:58:08 pm | 5:42:21 am | 7:27:14 pm | 13h 4m 14s | 🌖 (94%)Waning Gibbous: 94% illuminated at midnight, at the end of the day | 12:35:05 am | 13.0° S |
| Wed, Oct 28 | 6:41:41 am | 7:07:22 am | +52s | 6:02:06 pm | -1m 2s | 6:27:47 pm | 10h 54m 44s | -1m 54s | 12:34:57 pm | 42.65° | 6:12:16 am | 6:57:11 pm | 5:43:07 am | 7:26:18 pm | 13h 6m 9s | 🌖 (87%)Waning Gibbous: 87% illuminated at midnight, at the end of the day | 12:34:59 am | 13.3° S |
| Thu, Oct 29 | 6:42:31 am | 7:08:15 am | +53s | 6:01:06 pm | -1m 0s | 6:26:49 pm | 10h 52m 51s | -1m 54s | 12:34:53 pm | 42.32° | 6:13:04 am | 6:56:16 pm | 5:43:54 am | 7:25:24 pm | 13h 8m 3s | 🌖 (78%)Waning Gibbous: 78% illuminated at midnight, at the end of the day | 12:34:55 am | 13.7° S |
| Fri, Oct 30 | 6:43:22 am | 7:09:09 am | +54s | 6:00:06 pm | -1m 0s | 6:25:52 pm | 10h 50m 57s | -1m 53s | 12:34:50 pm | 41.99° | 6:13:52 am | 6:55:21 pm | 5:44:41 am | 7:24:31 pm | 13h 9m 56s | 🌖 (68%)Waning Gibbous: 68% illuminated at midnight, at the end of the day | 12:34:51 am | 14.0° S |
| Sat, Oct 31 | 6:44:13 am | 7:10:02 am | +53s | 5:59:08 pm | -58s | 6:24:57 pm | 10h 49m 6s | -1m 52s | 12:34:48 pm | 41.67° | 6:14:40 am | 6:54:28 pm | 5:45:28 am | 7:23:40 pm | 13h 11m 48s | 🌖 (56%)Waning Gibbous: 56% illuminated at midnight, at the end of the day | 12:34:49 am | 14.3° S |
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Year distribution of sunrise and sunset times in Diamond Bar, CA - 2026
The following graph shows sunrise and sunset times in Diamond Bar, 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 Diamond Bar, CA.
Daylight Dawn & dusk (civil twilight) Night Solar noon · Vertical steps in the curves = DST clock change
Earliest and latest sunrise and sunset in Diamond Bar, CA
In Diamond Bar, CA, the earliest sunrise of 2026 is on June 12 at 5:39 am, while the latest sunrise is on March 8 at 7:10 am. The earliest sunset is on December 4 at 4:41 pm, and the latest sunset is on June 29 at 8:06 pm.
Diamond Bar, CA gets 4h 32m more daylight on the longest day than on the shortest one (14h 25m versus 9h 53m). Averaged over the whole year, a day lasts 12h 10m.
Diamond Bar, CA Analemma
Due to Earth's tilted axis and slightly elliptical orbit, the Sun is never seen in the same position at noon in Diamond Bar. 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 Diamond Bar.
Over the year, the 12:00 Sun swings between just 32.5° above the horizon (around Dec 21) and 79.3° (around Jun 21) in Diamond Bar. 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 Diamond Bar, CA
These nearby towns and cities have almost the same sunrise and sunset times as Diamond Bar, CA — the difference is only seconds to a couple of minutes. Select any place to see its own sun calendar:
Walnut 3 miPomona 4 miChino Hills 5 miSan Dimas 5 miLa Verne 6 miCovina 6 miClaremont 7 miChino 7 mi