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 2 Jun 21, 2018 2 instances 20:23:17 20:37:02 22 3 Jun 22, 2018 3 instances 04:44:34 11:12:35 11:24:40 23 Jul 9 Aug Sep Oct Nov Dec 2017 - 10 instances Jan 6 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 13:00:52 13:24:22 13:45:26 19:10:14 19:29:18 19:53:08 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 11:36:03 11:41:42 11:41:51 11:43:18 30 2 Sep 30, 2016 2 instances 21:26:13 21:30:12 Oct 3 3 Oct 3, 2016 3 instances 14:35:55 14:35:56 14:35:56 Nov Dec