27 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 3 Jun 21, 2018 3 instances 20:24:55 20:38:15 20:38:40 22 3 Jun 22, 2018 3 instances 04:45:15 11:14:08 11:26:17 23 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan 6 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 13:02:27 13:25:56 13:47:01 19:11:47 19:30:51 19:54:41 Jul Aug Sep Oct 2 Nov Dec 25 26 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:37:40 11:43:18 11:43:29 11:44:54 30 2 Sep 30, 2016 2 instances 21:28:41 21:32:40 Oct 3 3 Oct 3, 2016 3 instances 14:38:51 14:39:21 14:39:23 Nov Dec