29 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 20:05:44 20:19:35 22 4 Jun 22, 2018 4 instances 04:37:10 06:42:55 10:55:29 11:07:46 Jul 9 Aug Sep Oct Nov Dec 2017 - 13 instances Jan 6 2 Jan 6, 2017 2 instances 16:44:16 16:46:52 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:43:39 13:07:12 13:28:21 18:53:25 19:12:29 19:36:22 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 12:52:01 20:02:30 Nov 20 Dec 25 26 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 2 Sep 19, 2016 2 instances 11:18:38 11:25:47 30 2 Sep 30, 2016 2 instances 20:55:57 21:03:31 Oct 3 3 Oct 3, 2016 3 instances 13:59:04 13:59:13 14:00:37 Nov Dec 29