23 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 17:39:24 23:16:05 22 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 7 Feb Mar Apr May Jun 22 Jul Aug 30 Sep Oct 3 Nov Dec 26 2016 - 14 instances Jan Feb 17 Mar Apr May Jun 21 23 2 Jun 23, 2016 2 instances 08:39:55 18:29:42 Jul Aug Sep 19 20 3 Sep 20, 2016 3 instances 03:07:02 03:17:39 03:28:29 Oct 1 2 Oct 1, 2016 2 instances 10:06:04 10:07:20 4 3 Oct 4, 2016 3 instances 02:10:36 02:24:01 03:20:55 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16