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 20:05:37 20:19:28 22 4 Jun 22, 2018 4 instances 04:37:07 06:42:33 10:55:22 11:07:40 Jul Aug Sep Oct Nov Dec 2017 - 13 instances Jan 6 2 Jan 6, 2017 2 instances 16:44:09 16:46:45 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:43:33 13:07:05 13:28:15 18:53:19 19:12:22 19:36:15 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 12:51:54 20:02:23 Nov 20 Dec 25 26 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 2 Sep 19, 2016 2 instances 11:18:31 11:25:40 30 2 Sep 30, 2016 2 instances 20:55:48 21:03:22 Oct 3 3 Oct 3, 2016 3 instances 13:58:46 13:59:02 14:00:27 Nov Dec 29