sun .5deg.comSunrise, Sunset, Solar noon and Sun position here: Longyearbyen, Svalbard and Jan Mayen (Svalbard, Spitsbergen), for period: September 2020. Longest day in month: September 2020: 18 hours, 27 minutes, 50 seconds (2020-09-01). Shortest day in this month: 10 hours, 34 minutes , 45 seconds (2020-09-30).
:September 2020, Solar noon=>Altitude: maximal 19.93° (2020-09-01, 12:57:16). minimal: 8.84° (2020-09-30, 12:47:15)
Table view of above data:
| date | Day | Sunrise | Solar noon | Sunset | Day Length |
| 01 | Tuesday | 03:43:21 | 12:57:16 | 22:11:11 | 18h 27m 50s |
| 02 | Wednesday | 03:53:33 | 12:56:57 | 22:00:21 | 18h 6m 48s |
| 03 | Thursday | 04:03:18 | 12:56:37 | 21:49:56 | 17h 46m 38s |
| 04 | Friday | 04:12:41 | 12:56:17 | 21:39:53 | 17h 27m 12s |
| 05 | Saturday | 04:21:45 | 12:55:57 | 21:30:09 | 17h 8m 24s |
| 06 | Sunday | 04:30:33 | 12:55:37 | 21:20:41 | 16h 50m 8s |
| 07 | Monday | 04:39:06 | 12:55:16 | 21:11:27 | 16h 32m 21s |
| 08 | Tuesday | 04:47:27 | 12:54:56 | 21:02:24 | 16h 14m 57s |
| 09 | Wednesday | 04:55:37 | 12:54:35 | 20:53:33 | 15h 57m 56s |
| 10 | Thursday | 05:03:38 | 12:54:14 | 20:44:50 | 15h 41m 12s |
| 11 | Friday | 05:11:30 | 12:53:53 | 20:36:15 | 15h 24m 45s |
| 12 | Saturday | 05:19:15 | 12:53:32 | 20:27:48 | 15h 8m 33s |
| 13 | Sunday | 05:26:53 | 12:53:10 | 20:19:27 | 14h 52m 34s |
| 14 | Monday | 05:34:26 | 12:52:49 | 20:11:12 | 14h 36m 46s |
| 15 | Tuesday | 05:41:53 | 12:52:27 | 20:03:02 | 14h 21m 9s |
| 16 | Wednesday | 05:49:17 | 12:52:06 | 19:54:55 | 14h 5m 38s |
| 17 | Thursday | 05:56:36 | 12:51:45 | 19:46:53 | 13h 50m 17s |
| 18 | Friday | 06:03:52 | 12:51:23 | 19:38:54 | 13h 35m 2s |
| 19 | Saturday | 06:11:06 | 12:51:02 | 19:30:57 | 13h 19m 51s |
| 20 | Sunday | 06:18:17 | 12:50:40 | 19:23:03 | 13h 4m 46s |
| 21 | Monday | 06:25:27 | 12:50:19 | 19:15:11 | 12h 49m 44s |
| 22 | Tuesday | 06:32:36 | 12:49:58 | 19:07:20 | 12h 34m 44s |
| 23 | Wednesday | 06:39:44 | 12:49:37 | 18:59:30 | 12h 19m 46s |
| 24 | Thursday | 06:46:51 | 12:49:16 | 18:51:41 | 12h 4m 50s |
| 25 | Friday | 06:53:59 | 12:48:55 | 18:43:52 | 11h 49m 53s |
| 26 | Saturday | 07:01:07 | 12:48:35 | 18:36:03 | 11h 34m 56s |
| 27 | Sunday | 07:08:15 | 12:48:14 | 18:28:13 | 11h 19m 58s |
| 28 | Monday | 07:15:26 | 12:47:54 | 18:20:23 | 11h 4m 57s |
| 29 | Tuesday | 07:22:38 | 12:47:34 | 18:12:31 | 10h 49m 53s |
| 30 | Wednesday | 07:29:52 | 12:47:15 | 18:04:37 | 10h 34m 45s |