Hours of Darkness

No College crew is permitted to be on the water before Lighting Down or after Lighting Up. Crews on the water within 15 minutes of lighting up or lighting down must have static white lights (clearly visible) attached to both the bow and stern of the boat.

Lighting Up and Down times for 2014 are listed in the table below. All of the times are adjusted to BST where applicable. The lighting times for today and tomorrow are available on a WAP phone (http://m.cucbc.org/lighting).

Lighting down is defined as the time when the sun rises to 95° below the zenith, whilst lighting up is the time at which the sun sets to 94° below the zenith.

DayDateLighting DownLighting Up
Saturday20/12/201407:3216:14
Sunday21/12/201407:3316:15
Monday22/12/201407:3316:15
Tuesday23/12/201407:3416:16
Wednesday24/12/201407:3416:16
Thursday25/12/201407:3516:17
Friday26/12/201407:3516:18
Saturday27/12/201407:3516:19
Sunday28/12/201407:3516:19
Monday29/12/201407:3516:20
Tuesday30/12/201407:3516:21
Wednesday31/12/201407:3516:22
Thursday01/01/201507:3516:23
Friday02/01/201507:3516:24
Saturday03/01/201507:3516:25
Sunday04/01/201507:3516:27
Monday05/01/201507:3516:28
Tuesday06/01/201507:3416:29
Wednesday07/01/201507:3416:30
Thursday08/01/201507:3416:32
Friday09/01/201507:3316:33
Saturday10/01/201507:3316:34
Sunday11/01/201507:3216:36
Monday12/01/201507:3216:37
Tuesday13/01/201507:3116:38
Wednesday14/01/201507:3016:40
Thursday15/01/201507:2916:41
Friday16/01/201507:2916:43
Saturday17/01/201507:2816:44
Sunday18/01/201507:2716:46
Monday19/01/201507:2616:48
Tuesday20/01/201507:2516:49
Wednesday21/01/201507:2416:51
Thursday22/01/201507:2316:53
Friday23/01/201507:2216:54
Saturday24/01/201507:2116:56
Sunday25/01/201507:1916:58
Monday26/01/201507:1816:59
Tuesday27/01/201507:1717:01
Wednesday28/01/201507:1617:03
Thursday29/01/201507:1417:04
Friday30/01/201507:1317:06
Saturday31/01/201507:1217:08
Sunday01/02/201507:1017:10
Monday02/02/201507:0917:12
Tuesday03/02/201507:0717:13
Wednesday04/02/201507:0517:15
Thursday05/02/201507:0417:17
Friday06/02/201507:0217:19
Saturday07/02/201507:0117:20
Sunday08/02/201506:5917:22
Monday09/02/201506:5717:24
Tuesday10/02/201506:5517:26
Wednesday11/02/201506:5417:28
Thursday12/02/201506:5217:29
Friday13/02/201506:5017:31
Saturday14/02/201506:4817:33
Sunday15/02/201506:4617:35
Monday16/02/201506:4417:37
Tuesday17/02/201506:4317:39
Wednesday18/02/201506:4117:40
Thursday19/02/201506:3917:42
Friday20/02/201506:3717:44
Saturday21/02/201506:3517:46
Sunday22/02/201506:3317:48
Monday23/02/201506:3117:49
Tuesday24/02/201506:2817:51
Wednesday25/02/201506:2617:53
Thursday26/02/201506:2417:55
Friday27/02/201506:2217:56
Saturday28/02/201506:2017:58
Sunday01/03/201506:1818:00
Monday02/03/201506:1618:02
Tuesday03/03/201506:1318:04
Wednesday04/03/201506:1118:05
Thursday05/03/201506:0918:07
Friday06/03/201506:0718:09
Saturday07/03/201506:0518:11
Sunday08/03/201506:0218:12
Monday09/03/201506:0018:14
Tuesday10/03/201505:5818:16
Wednesday11/03/201505:5618:18
Thursday12/03/201505:5318:20
Friday13/03/201505:5118:21
Saturday14/03/201505:4918:23
Sunday15/03/201505:4618:25
Monday16/03/201505:4418:27
Tuesday17/03/201505:4218:28
Wednesday18/03/201505:3918:30
Thursday19/03/201505:3718:32
Friday20/03/201505:3518:34
Saturday21/03/201505:3218:35
Sunday22/03/201505:3018:37
Monday23/03/201505:2818:39
Tuesday24/03/201505:2518:41
Wednesday25/03/201505:2318:42
Thursday26/03/201505:2118:44
Friday27/03/201505:1818:46
Saturday28/03/201505:1618:48
Sunday29/03/201506:1319:49
Monday30/03/201506:1119:51
Tuesday31/03/201506:0919:53
Wednesday01/04/201506:0619:55
Thursday02/04/201506:0419:57
Friday03/04/201506:0219:58
Saturday04/04/201505:5920:00
Sunday05/04/201505:5720:02
Monday06/04/201505:5420:04
Tuesday07/04/201505:5220:05
Wednesday08/04/201505:5020:07
Thursday09/04/201505:4720:09
Friday10/04/201505:4520:11
Saturday11/04/201505:4320:13
Sunday12/04/201505:4020:14
Monday13/04/201505:3820:16
Tuesday14/04/201505:3620:18
Wednesday15/04/201505:3320:20
Thursday16/04/201505:3120:22
Friday17/04/201505:2920:23
Saturday18/04/201505:2620:25
Sunday19/04/201505:2420:27
Monday20/04/201505:2220:29
Tuesday21/04/201505:2020:31
Wednesday22/04/201505:1720:33
Thursday23/04/201505:1520:34
Friday24/04/201505:1320:36
Saturday25/04/201505:1120:38
Sunday26/04/201505:0820:40
Monday27/04/201505:0620:42
Tuesday28/04/201505:0420:44
Wednesday29/04/201505:0220:45
Thursday30/04/201505:0020:47
Friday01/05/201504:5820:49
Saturday02/05/201504:5620:51
Sunday03/05/201504:5420:53
Monday04/05/201504:5220:54
Tuesday05/05/201504:4920:56
Wednesday06/05/201504:4720:58
Thursday07/05/201504:4621:00
Friday08/05/201504:4421:02
Saturday09/05/201504:4221:03
Sunday10/05/201504:4021:05
Monday11/05/201504:3821:07
Tuesday12/05/201504:3621:09
Wednesday13/05/201504:3421:10
Thursday14/05/201504:3221:12
Friday15/05/201504:3121:14
Saturday16/05/201504:2921:15
Sunday17/05/201504:2721:17
Monday18/05/201504:2621:19
Tuesday19/05/201504:2421:20
Wednesday20/05/201504:2221:22
Thursday21/05/201504:2121:24
Friday22/05/201504:1921:25
Saturday23/05/201504:1821:27
Sunday24/05/201504:1721:28
Monday25/05/201504:1521:30
Tuesday26/05/201504:1421:31
Wednesday27/05/201504:1321:32
Thursday28/05/201504:1121:34
Friday29/05/201504:1021:35
Saturday30/05/201504:0921:37
Sunday31/05/201504:0821:38
Monday01/06/201504:0721:39
Tuesday02/06/201504:0621:40
Wednesday03/06/201504:0521:41
Thursday04/06/201504:0421:43
Friday05/06/201504:0421:44
Saturday06/06/201504:0321:45
Sunday07/06/201504:0221:46
Monday08/06/201504:0121:47
Tuesday09/06/201504:0121:47
Wednesday10/06/201504:0021:48
Thursday11/06/201504:0021:49
Friday12/06/201504:0021:50
Saturday13/06/201503:5921:50
Sunday14/06/201503:5921:51
Monday15/06/201503:5921:52
Tuesday16/06/201503:5921:52
Wednesday17/06/201503:5921:53
Thursday18/06/201503:5921:53
Friday19/06/201503:5921:53
Saturday20/06/201503:5921:54
Sunday21/06/201503:5921:54
Monday22/06/201503:5921:54
Tuesday23/06/201503:5921:54
Wednesday24/06/201504:0021:54
Thursday25/06/201504:0021:54
Friday26/06/201504:0121:54
Saturday27/06/201504:0121:54
Sunday28/06/201504:0221:53
Monday29/06/201504:0321:53
Tuesday30/06/201504:0321:53
Wednesday01/07/201504:0421:52
Thursday02/07/201504:0521:52
Friday03/07/201504:0621:51
Saturday04/07/201504:0721:51
Sunday05/07/201504:0821:50
Monday06/07/201504:0921:50
Tuesday07/07/201504:1021:49
Wednesday08/07/201504:1121:48
Thursday09/07/201504:1221:47
Friday10/07/201504:1321:46
Saturday11/07/201504:1521:45
Sunday12/07/201504:1621:44
Monday13/07/201504:1721:43
Tuesday14/07/201504:1921:42
Wednesday15/07/201504:2021:41
Thursday16/07/201504:2121:40
Friday17/07/201504:2321:38
Saturday18/07/201504:2421:37
Sunday19/07/201504:2621:36
Monday20/07/201504:2721:34
Tuesday21/07/201504:2921:33
Wednesday22/07/201504:3021:32
Thursday23/07/201504:3221:30
Friday24/07/201504:3421:28
Saturday25/07/201504:3521:27
Sunday26/07/201504:3721:25
Monday27/07/201504:3921:24
Tuesday28/07/201504:4021:22
Wednesday29/07/201504:4221:20
Thursday30/07/201504:4421:18
Friday31/07/201504:4621:17
Saturday01/08/201504:4721:15
Sunday02/08/201504:4921:13
Monday03/08/201504:5121:11
Tuesday04/08/201504:5321:09
Wednesday05/08/201504:5421:07
Thursday06/08/201504:5621:05
Friday07/08/201504:5821:03
Saturday08/08/201505:0021:01
Sunday09/08/201505:0220:59
Monday10/08/201505:0320:57
Tuesday11/08/201505:0520:55
Wednesday12/08/201505:0720:53
Thursday13/08/201505:0920:51
Friday14/08/201505:1120:49
Saturday15/08/201505:1220:47
Sunday16/08/201505:1420:45
Monday17/08/201505:1620:42
Tuesday18/08/201505:1820:40
Wednesday19/08/201505:1920:38
Thursday20/08/201505:2120:36
Friday21/08/201505:2320:34
Saturday22/08/201505:2520:31
Sunday23/08/201505:2720:29
Monday24/08/201505:2820:27
Tuesday25/08/201505:3020:24
Wednesday26/08/201505:3220:22
Thursday27/08/201505:3420:20
Friday28/08/201505:3520:18
Saturday29/08/201505:3720:15
Sunday30/08/201505:3920:13
Monday31/08/201505:4120:11
Tuesday01/09/201505:4220:08
Wednesday02/09/201505:4420:06
Thursday03/09/201505:4620:04
Friday04/09/201505:4820:01
Saturday05/09/201505:4919:59
Sunday06/09/201505:5119:56
Monday07/09/201505:5319:54
Tuesday08/09/201505:5519:52
Wednesday09/09/201505:5619:49
Thursday10/09/201505:5819:47
Friday11/09/201506:0019:45
Saturday12/09/201506:0119:42
Sunday13/09/201506:0319:40
Monday14/09/201506:0519:37
Tuesday15/09/201506:0619:35
Wednesday16/09/201506:0819:33
Thursday17/09/201506:1019:30
Friday18/09/201506:1119:28
Saturday19/09/201506:1319:25
Sunday20/09/201506:1519:23
Monday21/09/201506:1719:21
Tuesday22/09/201506:1819:18
Wednesday23/09/201506:2019:16
Thursday24/09/201506:2219:14
Friday25/09/201506:2319:11
Saturday26/09/201506:2519:09
Sunday27/09/201506:2719:07
Monday28/09/201506:2819:04
Tuesday29/09/201506:3019:02
Wednesday30/09/201506:3219:00
Thursday01/10/201506:3318:57
Friday02/10/201506:3518:55
Saturday03/10/201506:3718:53
Sunday04/10/201506:3818:50
Monday05/10/201506:4018:48
Tuesday06/10/201506:4218:46
Wednesday07/10/201506:4318:44
Thursday08/10/201506:4518:41
Friday09/10/201506:4718:39
Saturday10/10/201506:4818:37
Sunday11/10/201506:5018:35
Monday12/10/201506:5218:32
Tuesday13/10/201506:5418:30
Wednesday14/10/201506:5518:28
Thursday15/10/201506:5718:26
Friday16/10/201506:5918:24
Saturday17/10/201507:0018:22
Sunday18/10/201507:0218:20
Monday19/10/201507:0418:18
Tuesday20/10/201507:0518:15
Wednesday21/10/201507:0718:13
Thursday22/10/201507:0918:11
Friday23/10/201507:1118:09
Saturday24/10/201507:1218:07
Sunday25/10/201506:1417:05
Monday26/10/201506:1617:03
Tuesday27/10/201506:1717:02
Wednesday28/10/201506:1917:00
Thursday29/10/201506:2116:58
Friday30/10/201506:2316:56
Saturday31/10/201506:2416:54
Sunday01/11/201506:2616:52
Monday02/11/201506:2816:51
Tuesday03/11/201506:2916:49
Wednesday04/11/201506:3116:47
Thursday05/11/201506:3316:46
Friday06/11/201506:3516:44
Saturday07/11/201506:3616:42
Sunday08/11/201506:3816:41
Monday09/11/201506:4016:39
Tuesday10/11/201506:4116:38
Wednesday11/11/201506:4316:36
Thursday12/11/201506:4516:35
Friday13/11/201506:4616:33
Saturday14/11/201506:4816:32
Sunday15/11/201506:5016:31
Monday16/11/201506:5116:29
Tuesday17/11/201506:5316:28
Wednesday18/11/201506:5516:27
Thursday19/11/201506:5616:26
Friday20/11/201506:5816:25
Saturday21/11/201506:5916:24
Sunday22/11/201507:0116:23
Monday23/11/201507:0216:22
Tuesday24/11/201507:0416:21
Wednesday25/11/201507:0516:20
Thursday26/11/201507:0716:19
Friday27/11/201507:0816:18
Saturday28/11/201507:1016:17
Sunday29/11/201507:1116:17
Monday30/11/201507:1216:16
Tuesday01/12/201507:1416:15
Wednesday02/12/201507:1516:15
Thursday03/12/201507:1616:14
Friday04/12/201507:1816:14
Saturday05/12/201507:1916:14
Sunday06/12/201507:2016:13
Monday07/12/201507:2116:13
Tuesday08/12/201507:2216:13
Wednesday09/12/201507:2316:12
Thursday10/12/201507:2416:12
Friday11/12/201507:2516:12
Saturday12/12/201507:2616:12
Sunday13/12/201507:2716:12
Monday14/12/201507:2816:12
Tuesday15/12/201507:2916:13
Wednesday16/12/201507:3016:13
Thursday17/12/201507:3016:13
Friday18/12/201507:3116:13
Saturday19/12/201507:3216:14
Sunday20/12/201507:3216:14
Monday21/12/201507:3316:15
Tuesday22/12/201507:3316:15
Wednesday23/12/201507:3416:16
Thursday24/12/201507:3416:16
Friday25/12/201507:3516:17
Saturday26/12/201507:3516:18
Sunday27/12/201507:3516:18
Monday28/12/201507:3516:19
Tuesday29/12/201507:3516:20
Wednesday30/12/201507:3516:21
Thursday31/12/201507:3516:22

XML and CSV files of the hours of darkness for the current year are available. Other webmasters may wish to use these to display the lighting up and down times on their own websites.

» XML Data for 2014
» CSV Data for 2014

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