20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:34:18 01:34:21 01:34:29 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 07:14:36 07:20:47 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 13 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 09:56:15 10:07:37 10:45:00 11:06:30 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 14:15:38 14:27:01 14:35:29 14:39:37 30 2 Sep 30, 2016 2 instances 20:43:04 20:46:00 Oct 3 3 Oct 3, 2016 3 instances 12:49:36 12:58:21 13:15:01 Nov Dec