21 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 22 26 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 13:28:08 15:45:43 Jul Aug Sep Oct 2 Nov 20 2 Nov 20, 2017 2 instances 19:13:41 20:23:28 Dec 26 2016 - 11 instances Jan Feb Mar Apr May Jun 22 2 Jun 22, 2016 2 instances 20:02:35 22:52:55 23 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 17:12:42 17:33:45 19:09:15 19:31:57 30 2 Sep 30, 2016 2 instances 23:43:37 23:48:00 Oct 3 2 Oct 3, 2016 2 instances 17:06:44 18:02:05 Nov Dec