19 instances from 3 years 2018 - 1 instance Jan Feb Mar Apr May Jun 21 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 2 Jan 6, 2017 2 instances 16:07:40 16:14:28 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 03:47:50 03:47:54 Jul Aug Sep Oct 2 Nov 2 Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 21 23 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 18:58:15 19:03:46 19:03:53 19:23:51 Oct 1 2 Oct 1, 2016 2 instances 03:36:04 03:41:24 3 2 Oct 3, 2016 2 instances 19:24:46 19:27:48 Nov Dec 29