sun .5deg.comSunrise, Sunset, Solar noon and Sun position here: Thành Phố Hạ Long, Vietnam (Quảng Ninh), for period: September 2026. Longest day in month: September 2026: 12 hours, 32 minutes, 53 seconds (2026-09-01). Shortest day in this month: 11 hours, 58 minutes , 42 seconds (2026-09-30).
:September 2026, Solar noon=>Altitude: maximal 77.49° (2026-09-01, 11:51:48). minimal: 66.43° (2026-09-30, 11:41:46)
Table view of above data:
| date | Day | Sunrise | Solar noon | Sunset | Day Length |
| 01 | Tuesday | 05:35:21 | 11:51:48 | 18:08:14 | 12h 32m 53s |
| 02 | Wednesday | 05:35:37 | 11:51:29 | 18:07:21 | 12h 31m 44s |
| 03 | Thursday | 05:35:52 | 11:51:09 | 18:06:27 | 12h 30m 35s |
| 04 | Friday | 05:36:07 | 11:50:50 | 18:05:33 | 12h 29m 26s |
| 05 | Saturday | 05:36:21 | 11:50:30 | 18:04:38 | 12h 28m 17s |
| 06 | Sunday | 05:36:36 | 11:50:09 | 18:03:43 | 12h 27m 7s |
| 07 | Monday | 05:36:50 | 11:49:49 | 18:02:48 | 12h 25m 58s |
| 08 | Tuesday | 05:37:05 | 11:49:28 | 18:01:52 | 12h 24m 47s |
| 09 | Wednesday | 05:37:19 | 11:49:08 | 18:00:56 | 12h 23m 37s |
| 10 | Thursday | 05:37:33 | 11:48:47 | 18:00:00 | 12h 22m 27s |
| 11 | Friday | 05:37:48 | 11:48:26 | 17:59:04 | 12h 21m 16s |
| 12 | Saturday | 05:38:02 | 11:48:05 | 17:58:07 | 12h 20m 5s |
| 13 | Sunday | 05:38:16 | 11:47:43 | 17:57:11 | 12h 18m 55s |
| 14 | Monday | 05:38:30 | 11:47:22 | 17:56:14 | 12h 17m 44s |
| 15 | Tuesday | 05:38:44 | 11:47:01 | 17:55:17 | 12h 16m 33s |
| 16 | Wednesday | 05:38:58 | 11:46:39 | 17:54:20 | 12h 15m 22s |
| 17 | Thursday | 05:39:12 | 11:46:18 | 17:53:23 | 12h 14m 11s |
| 18 | Friday | 05:39:27 | 11:45:56 | 17:52:26 | 12h 12m 59s |
| 19 | Saturday | 05:39:41 | 11:45:35 | 17:51:29 | 12h 11m 48s |
| 20 | Sunday | 05:39:55 | 11:45:13 | 17:50:32 | 12h 10m 37s |
| 21 | Monday | 05:40:09 | 11:44:52 | 17:49:35 | 12h 9m 26s |
| 22 | Tuesday | 05:40:24 | 11:44:31 | 17:48:38 | 12h 8m 14s |
| 23 | Wednesday | 05:40:39 | 11:44:10 | 17:47:41 | 12h 7m 2s |
| 24 | Thursday | 05:40:53 | 11:43:49 | 17:46:44 | 12h 5m 51s |
| 25 | Friday | 05:41:08 | 11:43:28 | 17:45:47 | 12h 4m 39s |
| 26 | Saturday | 05:41:23 | 11:43:07 | 17:44:51 | 12h 3m 28s |
| 27 | Sunday | 05:41:38 | 11:42:47 | 17:43:55 | 12h 2m 17s |
| 28 | Monday | 05:41:54 | 11:42:26 | 17:42:59 | 12h 1m 5s |
| 29 | Tuesday | 05:42:10 | 11:42:06 | 17:42:03 | 11h 59m 53s |
| 30 | Wednesday | 05:42:25 | 11:41:46 | 17:41:07 | 11h 58m 42s |