sun .5deg.comSunrise, Sunset, Solar noon and Sun position here: Sơn La, Vietnam , for period: September 2026. Longest day in month: September 2026: 12 hours, 33 minutes, 24 seconds (2026-09-01). Shortest day in this month: 11 hours, 58 minutes , 32 seconds (2026-09-30).
:September 2026, Solar noon=>Altitude: maximal 77.12° (2026-09-01, 12:04:25). minimal: 66.05° (2026-09-30, 11:54:23)
Table view of above data:
| date | Day | Sunrise | Solar noon | Sunset | Day Length |
| 01 | Tuesday | 05:47:43 | 12:04:25 | 18:21:07 | 12h 33m 24s |
| 02 | Wednesday | 05:47:59 | 12:04:06 | 18:20:12 | 12h 32m 13s |
| 03 | Thursday | 05:48:15 | 12:03:46 | 18:19:18 | 12h 31m 3s |
| 04 | Friday | 05:48:30 | 12:03:26 | 18:18:23 | 12h 29m 53s |
| 05 | Saturday | 05:48:46 | 12:03:07 | 18:17:27 | 12h 28m 41s |
| 06 | Sunday | 05:49:01 | 12:02:46 | 18:16:32 | 12h 27m 31s |
| 07 | Monday | 05:49:16 | 12:02:26 | 18:15:36 | 12h 26m 20s |
| 08 | Tuesday | 05:49:31 | 12:02:05 | 18:14:39 | 12h 25m 8s |
| 09 | Wednesday | 05:49:46 | 12:01:45 | 18:13:43 | 12h 23m 57s |
| 10 | Thursday | 05:50:01 | 12:01:24 | 18:12:46 | 12h 22m 45s |
| 11 | Friday | 05:50:16 | 12:01:03 | 18:11:49 | 12h 21m 33s |
| 12 | Saturday | 05:50:31 | 12:00:41 | 18:10:52 | 12h 20m 21s |
| 13 | Sunday | 05:50:46 | 12:00:20 | 18:09:55 | 12h 19m 9s |
| 14 | Monday | 05:51:01 | 11:59:59 | 18:08:57 | 12h 17m 56s |
| 15 | Tuesday | 05:51:15 | 11:59:37 | 18:08:00 | 12h 16m 45s |
| 16 | Wednesday | 05:51:30 | 11:59:16 | 18:07:02 | 12h 15m 32s |
| 17 | Thursday | 05:51:45 | 11:58:55 | 18:06:04 | 12h 14m 19s |
| 18 | Friday | 05:52:00 | 11:58:33 | 18:05:06 | 12h 13m 6s |
| 19 | Saturday | 05:52:15 | 11:58:12 | 18:04:09 | 12h 11m 54s |
| 20 | Sunday | 05:52:30 | 11:57:50 | 18:03:11 | 12h 10m 41s |
| 21 | Monday | 05:52:45 | 11:57:29 | 18:02:13 | 12h 9m 28s |
| 22 | Tuesday | 05:53:00 | 11:57:08 | 18:01:15 | 12h 8m 15s |
| 23 | Wednesday | 05:53:15 | 11:56:47 | 18:00:18 | 12h 7m 3s |
| 24 | Thursday | 05:53:31 | 11:56:26 | 17:59:20 | 12h 5m 49s |
| 25 | Friday | 05:53:46 | 11:56:05 | 17:58:23 | 12h 4m 37s |
| 26 | Saturday | 05:54:02 | 11:55:44 | 17:57:26 | 12h 3m 24s |
| 27 | Sunday | 05:54:18 | 11:55:23 | 17:56:29 | 12h 2m 11s |
| 28 | Monday | 05:54:34 | 11:55:03 | 17:55:32 | 12h 0m 58s |
| 29 | Tuesday | 05:54:51 | 11:54:43 | 17:54:36 | 11h 59m 45s |
| 30 | Wednesday | 05:55:07 | 11:54:23 | 17:53:39 | 11h 58m 32s |