September 2026 Sunrise & Sunset Today in Diamond Bar, United States 🇺🇸
Sun Phase: Daylight
Sunrise Today: 05:58 ↑ 65.6° ENE
Sunset Today: 19:57 ↑ 294.3° WNW
Day Length: 13h 59m
Sun Direction: SSE
Sun Altitude: 75.07°
Sun Distance: 151.938 million km
Next Equinox: Tuesday, September 22, 2026 (September Equinox)
When Is Sunrise & Sunset in Diamond Bar?
September 2026 Sunrise & Sunset Times in Diamond Bar
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| Day | Sunrise/Sunset | Daylight | Astronomical Twilight | Nautical Twilight | Civil Twilight | Solar Noon | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sunrise | Sunset | Length | Diff. | Start | End | Start | End | Start | End | Time | Sun Dist. (Mil km) | |
| 1 |
06:25
↑
80° E
|
19:16
↑
280° W
|
12h 51m | -2m 01s | 04:58 | 20:43 | 05:29 | 20:12 | 05:59 | 19:42 | 12:51 | 150.98 |
| 2 |
06:25
↑
80° E
|
19:15
↑
280° W
|
12h 49m | -2m 01s | 04:58 | 20:41 | 05:29 | 20:11 | 05:59 | 19:41 | 12:51 | 150.94 |
| 3 |
06:26
↑
80° E
|
19:13
↑
279° W
|
12h 47m | -2m 02s | 04:59 | 20:40 | 05:30 | 20:09 | 06:00 | 19:39 | 12:50 | 150.91 |
| 4 |
06:27
↑
81° E
|
19:12
↑
279° W
|
12h 45m | -2m 02s | 05:00 | 20:38 | 05:31 | 20:08 | 06:01 | 19:38 | 12:50 | 150.87 |
| 5 |
06:27
↑
81° E
|
19:11
↑
278° W
|
12h 43m | -2m 02s | 05:01 | 20:37 | 05:32 | 20:06 | 06:02 | 19:36 | 12:50 | 150.84 |
| 6 |
06:28
↑
82° E
|
19:09
↑
278° W
|
12h 41m | -2m 03s | 05:02 | 20:35 | 05:33 | 20:05 | 06:02 | 19:35 | 12:49 | 150.80 |
| 7 |
06:29
↑
82° E
|
19:08
↑
278° W
|
12h 39m | -2m 03s | 05:03 | 20:34 | 05:33 | 20:03 | 06:03 | 19:34 | 12:49 | 150.77 |
| 8 |
06:30
↑
83° E
|
19:07
↑
277° W
|
12h 37m | -2m 03s | 05:04 | 20:32 | 05:34 | 20:02 | 06:04 | 19:32 | 12:49 | 150.73 |
| 9 |
06:30
↑
83° E
|
19:05
↑
276° W
|
12h 34m | -2m 04s | 05:05 | 20:31 | 05:35 | 20:00 | 06:04 | 19:31 | 12:48 | 150.69 |
| 10 |
06:31
↑
84° E
|
19:04
↑
276° W
|
12h 32m | -2m 04s | 05:05 | 20:29 | 05:36 | 19:59 | 06:05 | 19:29 | 12:48 | 150.65 |
| 11 |
06:32
↑
84° E
|
19:02
↑
276° W
|
12h 30m | -2m 04s | 05:06 | 20:27 | 05:36 | 19:57 | 06:06 | 19:28 | 12:48 | 150.61 |
| 12 |
06:32
↑
85° E
|
19:01
↑
275° W
|
12h 28m | -2m 04s | 05:07 | 20:26 | 05:37 | 19:56 | 06:07 | 19:27 | 12:47 | 150.58 |
| 13 |
06:33
↑
85° E
|
19:00
↑
275° W
|
12h 26m | -2m 04s | 05:08 | 20:24 | 05:38 | 19:54 | 06:07 | 19:25 | 12:47 | 150.54 |
| 14 |
06:34
↑
86° E
|
18:58
↑
274° W
|
12h 24m | -2m 05s | 05:09 | 20:23 | 05:39 | 19:53 | 06:08 | 19:24 | 12:47 | 150.50 |
| 15 |
06:34
↑
86° E
|
18:57
↑
274° W
|
12h 22m | -2m 05s | 05:10 | 20:21 | 05:40 | 19:52 | 06:09 | 19:22 | 12:46 | 150.46 |
| 16 |
06:35
↑
86° E
|
18:55
↑
273° W
|
12h 20m | -2m 05s | 05:10 | 20:20 | 05:40 | 19:50 | 06:09 | 19:21 | 12:46 | 150.41 |
| 17 |
06:36
↑
87° E
|
18:54
↑
273° W
|
12h 18m | -2m 05s | 05:11 | 20:18 | 05:41 | 19:49 | 06:10 | 19:20 | 12:45 | 150.37 |
| 18 |
06:36
↑
87° E
|
18:53
↑
272° W
|
12h 16m | -2m 05s | 05:12 | 20:17 | 05:42 | 19:47 | 06:11 | 19:18 | 12:45 | 150.33 |
| 19 |
06:37
↑
88° E
|
18:51
↑
272° W
|
12h 14m | -2m 05s | 05:13 | 20:15 | 05:42 | 19:46 | 06:12 | 19:17 | 12:45 | 150.29 |
| 20 |
06:38
↑
88° E
|
18:50
↑
271° W
|
12h 12m | -2m 05s | 05:14 | 20:14 | 05:43 | 19:44 | 06:12 | 19:15 | 12:44 | 150.25 |
| 21 |
06:38
↑
89° E
|
18:48
↑
271° W
|
12h 09m | -2m 05s | 05:14 | 20:12 | 05:44 | 19:43 | 06:13 | 19:14 | 12:44 | 150.21 |
| 22 |
06:39
↑
89° E
|
18:47
↑
270° W
|
12h 07m | -2m 06s | 05:15 | 20:11 | 05:45 | 19:41 | 06:14 | 19:12 | 12:44 | 150.16 |
| 23 |
06:40
↑
90° E
|
18:46
↑
270° W
|
12h 05m | -2m 06s | 05:16 | 20:09 | 05:45 | 19:40 | 06:14 | 19:11 | 12:43 | 150.12 |
| 24 |
06:41
↑
90° E
|
18:44
↑
270° W
|
12h 03m | -2m 06s | 05:17 | 20:08 | 05:46 | 19:39 | 06:15 | 19:10 | 12:43 | 150.08 |
| 25 |
06:41
↑
91° E
|
18:43
↑
269° W
|
12h 01m | -2m 06s | 05:18 | 20:06 | 05:47 | 19:37 | 06:16 | 19:08 | 12:43 | 150.04 |
| 26 |
06:42
↑
91° E
|
18:41
↑
269° W
|
11h 59m | -2m 06s | 05:18 | 20:05 | 05:48 | 19:36 | 06:17 | 19:07 | 12:42 | 149.99 |
| 27 |
06:43
↑
92° E
|
18:40
↑
268° W
|
11h 57m | -2m 06s | 05:19 | 20:03 | 05:48 | 19:34 | 06:17 | 19:05 | 12:42 | 149.95 |
| 28 |
06:43
↑
92° E
|
18:39
↑
268° W
|
11h 55m | -2m 05s | 05:20 | 20:02 | 05:49 | 19:33 | 06:18 | 19:04 | 12:42 | 149.91 |
| 29 |
06:44
↑
92° E
|
18:37
↑
267° W
|
11h 53m | -2m 05s | 05:21 | 20:01 | 05:50 | 19:32 | 06:19 | 19:03 | 12:41 | 149.87 |
| 30 |
06:45
↑
93° E
|
18:36
↑
267° W
|
11h 51m | -2m 05s | 05:21 | 19:59 | 05:51 | 19:30 | 06:19 | 19:01 | 12:41 | 149.83 |
|
All times are in local time for Diamond Bar. Time is adjusted for Daylight Saving Time (DST) when applicable. Calculations account for atmospheric refraction and are based on the Gregorian calendar. Today's date is in the table. |
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In Diamond Bar, the earliest sunrise of September is on September 01 or September 02 and the latest sunset of September is on September 01.
2026 Sun Graph for Diamond Bar
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Sun's Path on Selected Date in Diamond Bar
Today's Sunrise & Sunset times in other cities in United States:
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Is the Day Getting Longer or Shorter in Diamond Bar?
Days in Diamond Bar are currently getting shorter by about 1m 22s each day, roughly 10 minutes less daylight per week.
Golden Hour & Blue Hour in Diamond Bar Today
| Morning | Evening | |
|---|---|---|
| Blue hour | 05:29-05:40 | 20:14-20:25 |
| Golden hour | 05:40-06:32 | 19:22-20:14 |
Diamond Bar's Longest and Shortest Days
| Event | Date | Daylight |
|---|---|---|
| Longest day | June 22, 2026 | -10h 24m |
| Shortest day | December 21, 2026 | -15h 52m |
| Earliest sunrise | June 8, 2026 | 05:39 |
| Latest sunset | June 26, 2026 | 20:06 |
Understanding Twilight & the Golden Hour
After the sun drops below the horizon, the sky does not turn dark all at once. Civil twilight is the brightest stage, when there is still enough natural light for most outdoor activities. Nautical twilight follows, when the sea horizon becomes hard to make out. Astronomical twilight is the darkest stage, after which the sky is fully dark and the faintest stars appear. The same three stages occur in reverse before sunrise, as dawn.
Photographers in Diamond Bar get the golden hour at 05:40-06:32 in the morning and 19:22-20:14 in the evening today; the bluish blue hour falls near 05:29-05:40 and 20:14-20:25. Both windows move across the seasons.
Frequently Asked Questions about Sun in Diamond Bar
What time is sunrise in Diamond Bar today?
Today Diamond Bar has sunrise at 05:58 local time.
What time is sunset in Diamond Bar today?
The sun sets over Diamond Bar today at 19:57 local time.
What time is solar noon in Diamond Bar today?
Solar noon in Diamond Bar — when the sun is at its highest point in the sky — is at 12:57 local time today.
When does civil twilight begin and end in Diamond Bar?
In Diamond Bar today: civil twilight begins at 05:29 (before sunrise) and ends at 20:25 (after sunset). Civil twilight is the brightest of the three twilight phases.
When does nautical twilight occur in Diamond Bar?
Nautical twilight in Diamond Bar today runs from 04:55 in the morning to 20:59 in the evening — the period when the horizon is still visible to sailors but stars are out.
When is the sky fully dark in Diamond Bar for stargazing?
Astronomical twilight in Diamond Bar ends at 21:35 in the evening and resumes at 04:19 in the morning — between those times the sky is fully dark, ideal for observing faint stars and deep-sky objects.
Where on the horizon does the sun rise and set in Diamond Bar?
Today in Diamond Bar, the sun rises at an azimuth of 66° and sets at 294° (measured clockwise from due north). The exact angle shifts slightly each day with the seasons.
