15 instances from 2 years 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 01:24:51 01:27:09 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 01:12:17 01:25:55 Nov Dec 2016 - 11 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 08:38:28 09:19:18 09:20:33 09:28:25 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 08:17:01 08:21:49 08:22:00 08:22:22 30 2 Sep 30, 2016 2 instances 16:17:00 16:22:39 Oct 3 Nov Dec