sun .5deg.comSunrise, Sunset, Solar noon and Sun position here: Viseu, Portugal , for period: September 2026. Longest day in month: September 2026: 13 hours, 5 minutes, 41 seconds (2026-09-01). Shortest day in this month: 11 hours, 48 minutes , 52 seconds (2026-09-30).
:September 2026, Solar noon=>Altitude: maximal 57.67° (2026-09-01, 13:31:38). minimal: 46.6° (2026-09-30, 13:21:36)
Table view of above data:
| date | Day | Sunrise | Solar noon | Sunset | Day Length |
| 01 | Tuesday | 06:58:47 | 13:31:38 | 20:04:28 | 13h 5m 41s |
| 02 | Wednesday | 06:59:46 | 13:31:18 | 20:02:51 | 13h 3m 5s |
| 03 | Thursday | 07:00:44 | 13:30:59 | 20:01:14 | 13h 0m 30s |
| 04 | Friday | 07:01:42 | 13:30:39 | 19:59:36 | 12h 57m 54s |
| 05 | Saturday | 07:02:40 | 13:30:19 | 19:57:58 | 12h 55m 18s |
| 06 | Sunday | 07:03:38 | 13:29:59 | 19:56:19 | 12h 52m 41s |
| 07 | Monday | 07:04:37 | 13:29:38 | 19:54:40 | 12h 50m 3s |
| 08 | Tuesday | 07:05:35 | 13:29:18 | 19:53:01 | 12h 47m 26s |
| 09 | Wednesday | 07:06:33 | 13:28:57 | 19:51:21 | 12h 44m 48s |
| 10 | Thursday | 07:07:31 | 13:28:36 | 19:49:41 | 12h 42m 10s |
| 11 | Friday | 07:08:29 | 13:28:15 | 19:48:01 | 12h 39m 32s |
| 12 | Saturday | 07:09:27 | 13:27:54 | 19:46:20 | 12h 36m 53s |
| 13 | Sunday | 07:10:26 | 13:27:32 | 19:44:39 | 12h 34m 13s |
| 14 | Monday | 07:11:24 | 13:27:11 | 19:42:58 | 12h 31m 34s |
| 15 | Tuesday | 07:12:22 | 13:26:50 | 19:41:17 | 12h 28m 55s |
| 16 | Wednesday | 07:13:21 | 13:26:28 | 19:39:36 | 12h 26m 15s |
| 17 | Thursday | 07:14:19 | 13:26:07 | 19:37:54 | 12h 23m 35s |
| 18 | Friday | 07:15:18 | 13:25:45 | 19:36:13 | 12h 20m 55s |
| 19 | Saturday | 07:16:16 | 13:25:24 | 19:34:32 | 12h 18m 16s |
| 20 | Sunday | 07:17:15 | 13:25:03 | 19:32:50 | 12h 15m 35s |
| 21 | Monday | 07:18:14 | 13:24:41 | 19:31:09 | 12h 12m 55s |
| 22 | Tuesday | 07:19:13 | 13:24:20 | 19:29:27 | 12h 10m 14s |
| 23 | Wednesday | 07:20:12 | 13:23:59 | 19:27:46 | 12h 7m 34s |
| 24 | Thursday | 07:21:11 | 13:23:38 | 19:26:05 | 12h 4m 54s |
| 25 | Friday | 07:22:11 | 13:23:17 | 19:24:24 | 12h 2m 13s |
| 26 | Saturday | 07:23:10 | 13:22:56 | 19:22:43 | 11h 59m 33s |
| 27 | Sunday | 07:24:10 | 13:22:36 | 19:21:02 | 11h 56m 52s |
| 28 | Monday | 07:25:10 | 13:22:16 | 19:19:22 | 11h 54m 12s |
| 29 | Tuesday | 07:26:10 | 13:21:56 | 19:17:42 | 11h 51m 32s |
| 30 | Wednesday | 07:27:10 | 13:21:36 | 19:16:02 | 11h 48m 52s |