33 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 8 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2018 4 instances 15:08:15 15:37:03 15:47:55 15:52:12 22 3 Jun 22, 2018 3 instances 03:05:48 10:42:03 10:54:27 Jul 4 Aug Sep Oct Nov Dec 2017 - 14 instances Jan 6 2 Jan 6, 2017 2 instances 16:33:23 16:36:28 9 Feb Mar Apr May Jun 21 5 Jun 21, 2017 5 instances 10:46:49 10:48:21 18:44:53 19:04:43 19:27:53 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 10:40:45 19:51:35 Nov 8 2 Nov 8, 2017 2 instances 20:55:33 20:55:35 Dec 25 26 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 10:51:50 10:57:27 10:57:38 10:57:41 30 2 Sep 30, 2016 2 instances 20:16:36 20:22:20 Oct 3 3 Oct 3, 2016 3 instances 13:10:24 13:10:29 13:10:29 Nov Dec 29