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 20:03:01 20:16:56 22 3 Jun 22, 2018 3 instances 04:36:05 10:52:57 11:05:14 23 30 Jul Aug Sep Oct Nov Dec 2017 - 14 instances Jan 6 2 Jan 6, 2017 2 instances 16:41:16 16:43:51 9 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:41:07 13:04:40 13:25:50 18:50:56 19:09:59 19:33:52 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 12:49:30 20:00:02 Nov 20 Dec 25 26 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 2 Sep 19, 2016 2 instances 11:16:02 11:23:09 30 2 Sep 30, 2016 2 instances 20:51:41 20:59:26 Oct 3 3 Oct 3, 2016 3 instances 13:53:08 13:53:17 13:54:47 Nov Dec 29