28 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 6 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 20:07:41 20:21:30 22 4 Jun 22, 2018 4 instances 04:37:59 06:53:35 10:57:21 11:09:38 Jul Aug Sep Oct Nov Dec 2017 - 12 instances Jan 6 2 Jan 6, 2017 2 instances 16:46:36 16:48:59 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:45:35 13:09:06 13:30:15 18:55:18 19:14:22 19:38:14 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 12:53:56 20:04:21 Nov Dec 25 26 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 3 Sep 19, 2016 3 instances 11:20:35 11:26:10 11:27:44 30 2 Sep 30, 2016 2 instances 20:58:51 21:06:05 Oct 3 3 Oct 3, 2016 3 instances 14:03:14 14:03:15 14:04:47 Nov Dec 29