30 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 20:18:59 20:32:42 22 3 Jun 22, 2018 3 instances 04:42:42 11:08:25 11:20:30 23 30 Jul Aug Sep Oct Nov Dec 2017 - 12 instances Jan 6 10 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:56:34 13:20:07 13:41:09 19:06:04 19:25:09 19:48:59 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 13:05:03 20:14:57 Nov Dec 25 26 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:31:44 11:37:21 11:37:29 11:38:56 30 2 Sep 30, 2016 2 instances 21:17:16 21:23:04 Oct 3 3 Oct 3, 2016 3 instances 14:27:21 14:27:21 14:27:22 Nov Dec 29