28 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 20:20:58 20:34:42 22 4 Jun 22, 2018 4 instances 04:43:34 11:10:19 11:22:25 23:47:22 23 Jul Aug Sep Oct Nov Dec 2017 - 11 instances Jan 6 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:58:33 13:22:05 13:43:07 19:08:01 19:27:06 19:50:56 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 13:06:59 20:16:52 Nov Dec 25 26 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:33:45 11:39:24 11:39:32 11:40:59 30 2 Sep 30, 2016 2 instances 21:20:28 21:26:15 Oct 3 3 Oct 3, 2016 3 instances 14:31:14 14:31:14 14:31:15 Nov Dec