18 instances from 4 years 2020 - 1 instance Jan 19 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2017 - 3 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 10:23:48 11:21:23 Jul Aug Sep Oct Nov Dec 2016 - 12 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 14:07:38 17:42:35 22:40:46 21 Jul Aug Sep 19 2 Sep 19, 2016 2 instances 15:46:27 16:29:46 30 2 Sep 30, 2016 2 instances 21:54:47 23:03:49 Oct 3 3 Oct 3, 2016 3 instances 15:08:34 15:22:37 16:06:10 Nov Dec 29