19 instances from 4 years 2018 - 1 instance Jan Feb Mar Apr May Jun 21 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 6 2 Jan 6, 2017 2 instances 15:09:15 15:09:18 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 03:17:42 03:19:50 Jul Aug Sep Oct 2 Nov 2 Dec 2016 - 11 instances Jan Feb 17 Mar Apr May Jun 22 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 18:19:04 18:24:13 18:46:41 Oct 1 2 Oct 1, 2016 2 instances 02:57:45 04:04:30 3 3 Oct 3, 2016 3 instances 18:41:26 18:46:30 18:50:54 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16