September 2026 Sunrise & Sunset Today in Koper, Slovenia 🇸🇮
Sun Phase: Daylight
Sunrise Today: 05:48 ↑ 62.9° ENE
Sunset Today: 20:33 ↑ 296.9° WNW
Day Length: 14h 44m
Sun Direction: SE
Sun Altitude: 53.82°
Sun Distance: 151.829 million km
Next Equinox: Wednesday, September 23, 2026 (September Equinox)
When Is Sunrise & Sunset in Koper?
September 2026 Sunrise & Sunset Times in Koper
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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 |
06:26
↑
77° ENE
|
19:42
↑
282° WNW
|
13h 16m | -3m 04s | 04:39 | 21:29 | 05:18 | 20:50 | 05:55 | 20:14 | 13:05 | 150.98 |
| 2 |
06:27
↑
78° ENE
|
19:41
↑
282° WNW
|
13h 13m | -3m 04s | 04:40 | 21:27 | 05:19 | 20:48 | 05:56 | 20:12 | 13:04 | 150.94 |
| 3 |
06:28
↑
78° ENE
|
19:39
↑
281° WNW
|
13h 10m | -3m 05s | 04:42 | 21:25 | 05:21 | 20:46 | 05:57 | 20:10 | 13:04 | 150.91 |
| 4 |
06:30
↑
79° E
|
19:37
↑
281° W
|
13h 07m | -3m 05s | 04:44 | 21:22 | 05:22 | 20:44 | 05:59 | 20:08 | 13:04 | 150.87 |
| 5 |
06:31
↑
79° E
|
19:35
↑
280° W
|
13h 04m | -3m 06s | 04:45 | 21:20 | 05:24 | 20:42 | 06:00 | 20:06 | 13:03 | 150.84 |
| 6 |
06:32
↑
80° E
|
19:33
↑
280° W
|
13h 00m | -3m 06s | 04:47 | 21:18 | 05:25 | 20:40 | 06:01 | 20:04 | 13:03 | 150.80 |
| 7 |
06:33
↑
80° E
|
19:31
↑
279° W
|
12h 57m | -3m 06s | 04:48 | 21:15 | 05:26 | 20:38 | 06:02 | 20:02 | 13:03 | 150.76 |
| 8 |
06:34
↑
81° E
|
19:29
↑
279° W
|
12h 54m | -3m 07s | 04:50 | 21:13 | 05:28 | 20:36 | 06:04 | 20:00 | 13:02 | 150.73 |
| 9 |
06:36
↑
82° E
|
19:27
↑
278° W
|
12h 51m | -3m 07s | 04:52 | 21:11 | 05:29 | 20:34 | 06:05 | 19:58 | 13:02 | 150.69 |
| 10 |
06:37
↑
82° E
|
19:25
↑
278° W
|
12h 48m | -3m 08s | 04:53 | 21:09 | 05:31 | 20:31 | 06:06 | 19:56 | 13:02 | 150.65 |
| 11 |
06:38
↑
83° E
|
19:23
↑
277° W
|
12h 45m | -3m 08s | 04:55 | 21:06 | 05:32 | 20:29 | 06:08 | 19:54 | 13:01 | 150.61 |
| 12 |
06:39
↑
83° E
|
19:22
↑
276° W
|
12h 42m | -3m 08s | 04:56 | 21:04 | 05:33 | 20:27 | 06:09 | 19:52 | 13:01 | 150.57 |
| 13 |
06:41
↑
84° E
|
19:20
↑
276° W
|
12h 39m | -3m 08s | 04:58 | 21:02 | 05:35 | 20:25 | 06:10 | 19:50 | 13:01 | 150.53 |
| 14 |
06:42
↑
84° E
|
19:18
↑
275° W
|
12h 35m | -3m 09s | 04:59 | 21:00 | 05:36 | 20:23 | 06:11 | 19:48 | 13:00 | 150.49 |
| 15 |
06:43
↑
85° E
|
19:16
↑
275° W
|
12h 32m | -3m 09s | 05:01 | 20:58 | 05:37 | 20:21 | 06:13 | 19:46 | 13:00 | 150.45 |
| 16 |
06:44
↑
85° E
|
19:14
↑
274° W
|
12h 29m | -3m 09s | 05:02 | 20:55 | 05:39 | 20:19 | 06:14 | 19:44 | 13:00 | 150.41 |
| 17 |
06:45
↑
86° E
|
19:12
↑
274° W
|
12h 26m | -3m 09s | 05:04 | 20:53 | 05:40 | 20:17 | 06:15 | 19:42 | 12:59 | 150.37 |
| 18 |
06:47
↑
86° E
|
19:10
↑
273° W
|
12h 23m | -3m 09s | 05:05 | 20:51 | 05:41 | 20:15 | 06:16 | 19:40 | 12:59 | 150.33 |
| 19 |
06:48
↑
87° E
|
19:08
↑
273° W
|
12h 20m | -3m 09s | 05:07 | 20:49 | 05:43 | 20:13 | 06:18 | 19:38 | 12:59 | 150.29 |
| 20 |
06:49
↑
88° E
|
19:06
↑
272° W
|
12h 16m | -3m 10s | 05:08 | 20:47 | 05:44 | 20:11 | 06:19 | 19:36 | 12:58 | 150.24 |
| 21 |
06:50
↑
88° E
|
19:04
↑
272° W
|
12h 13m | -3m 10s | 05:10 | 20:45 | 05:45 | 20:09 | 06:20 | 19:34 | 12:58 | 150.20 |
| 22 |
06:52
↑
89° E
|
19:02
↑
271° W
|
12h 10m | -3m 10s | 05:11 | 20:42 | 05:47 | 20:07 | 06:21 | 19:32 | 12:57 | 150.16 |
| 23 |
06:53
↑
89° E
|
19:00
↑
270° W
|
12h 07m | -3m 10s | 05:12 | 20:40 | 05:48 | 20:05 | 06:23 | 19:30 | 12:57 | 150.12 |
| 24 |
06:54
↑
90° E
|
18:58
↑
270° W
|
12h 04m | -3m 10s | 05:14 | 20:38 | 05:49 | 20:03 | 06:24 | 19:28 | 12:57 | 150.08 |
| 25 |
06:55
↑
90° E
|
18:56
↑
269° W
|
12h 01m | -3m 10s | 05:15 | 20:36 | 05:51 | 20:01 | 06:25 | 19:26 | 12:56 | 150.03 |
| 26 |
06:57
↑
91° E
|
18:54
↑
269° W
|
11h 57m | -3m 10s | 05:17 | 20:34 | 05:52 | 19:59 | 06:26 | 19:25 | 12:56 | 149.99 |
| 27 |
06:58
↑
92° E
|
18:53
↑
268° W
|
11h 54m | -3m 10s | 05:18 | 20:32 | 05:53 | 19:57 | 06:28 | 19:23 | 12:56 | 149.95 |
| 28 |
06:59
↑
92° E
|
18:51
↑
268° W
|
11h 51m | -3m 10s | 05:19 | 20:30 | 05:55 | 19:55 | 06:29 | 19:21 | 12:55 | 149.91 |
| 29 |
07:00
↑
93° E
|
18:49
↑
267° W
|
11h 48m | -3m 10s | 05:21 | 20:28 | 05:56 | 19:53 | 06:30 | 19:19 | 12:55 | 149.86 |
| 30 |
07:02
↑
93° E
|
18:47
↑
266° W
|
11h 45m | -3m 10s | 05:22 | 20:26 | 05:57 | 19:51 | 06:31 | 19:17 | 12:55 | 149.82 |
|
All times are in local time for Koper. 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 Koper, the earliest sunrise of September is on September 01 and the latest sunset of September is on September 01.
2026 Sun Graph for Koper
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Sun's Path on Selected Date in Koper
Today's Sunrise & Sunset times in other cities in Slovenia:
Sunrise & Sunset times in Slovenia ›
Is the Day Getting Longer or Shorter in Koper?
Days in Koper are currently getting shorter by about 2m 27s each day, roughly 17 minutes less daylight per week.
Golden Hour & Blue Hour in Koper Today
| Morning | Evening | |
|---|---|---|
| Blue hour | 05:14-05:27 | 20:54-21:07 |
| Golden hour | 05:27-06:30 | 19:51-20:54 |
Koper's Longest and Shortest Days
| Event | Date | Daylight |
|---|---|---|
| Longest day | June 22, 2026 | 15h 40m |
| Shortest day | December 21, 2026 | 8h 41m |
| Earliest sunrise | June 14, 2026 | 05:15 |
| Latest sunset | June 20, 2026 | 20:57 |
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.
Koper sees its golden hour today around 05:27-06:30 and 19:51-20:54, framed by the blue hour at 05:14-05:27 and 20:54-21:07. As the sun's arc shifts with the seasons, these windows move with it.
Frequently Asked Questions about Sun in Koper
What time is sunrise in Koper today?
Today Koper has sunrise at 05:48 local time.
What time is sunset in Koper today?
Today Koper has sunset at 20:33 local time.
What time is solar noon in Koper today?
Solar noon in Koper — when the sun is at its highest point in the sky — is at 13:11 local time today.
When does civil twilight begin and end in Koper?
In Koper today: civil twilight begins at 05:14 (before sunrise) and ends at 21:07 (after sunset). Civil twilight is the brightest of the three twilight phases.
When does nautical twilight occur in Koper?
Nautical twilight in Koper today runs from 04:30 in the morning to 21:50 in the evening — the period when the horizon is still visible to sailors but stars are out.
When is the sky fully dark in Koper for stargazing?
Astronomical twilight in Koper ends at 22:40 in the evening and resumes at 03:40 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 Koper?
Today in Koper, the sun rises at an azimuth of 63° and sets at 297° (measured clockwise from due north). The exact angle shifts slightly each day with the seasons.
