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 20:09:45 20:23:31 22 4 Jun 22, 2018 4 instances 04:38:50 07:15:37 10:59:20 11:11:37 Jul Aug Sep Oct Nov Dec 2017 - 12 instances Jan 6 2 Jan 6, 2017 2 instances 16:48:58 16:51:14 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:47:33 13:11:05 13:32:13 18:57:14 19:16:21 19:40:11 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 12:55:54 20:06:15 Nov Dec 25 26 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 3 Sep 19, 2016 3 instances 11:22:35 11:28:12 11:29:45 30 2 Sep 30, 2016 2 instances 21:01:44 21:08:55 Oct 3 3 Oct 3, 2016 3 instances 14:07:29 14:07:32 14:09:25 Nov Dec 29