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 20:18:21 20:32:04 22 3 Jun 22, 2018 3 instances 04:42:26 11:07:39 11:19:54 23 Jul Aug Sep Oct Nov Dec 2017 - 11 instances Jan 6 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:55:57 13:19:29 13:40:32 19:05:27 19:24:33 19:48:23 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 13:04:26 20:14:21 Nov Dec 25 26 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:31:06 11:36:43 11:36:50 11:38:18 30 2 Sep 30, 2016 2 instances 21:16:17 21:22:02 Oct 3 3 Oct 3, 2016 3 instances 14:25:56 14:26:02 14:26:19 Nov Dec 29