18 instances from 2 years 2017 - 2 instances Jan 6 7 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 16 instances Jan Feb 17 Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 09:14:58 15:43:51 15:44:45 20:32:10 25 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 04:11:25 04:15:17 04:15:58 04:20:05 Oct 1 2 Oct 1, 2016 2 instances 13:09:44 13:17:47 4 3 Oct 4, 2016 3 instances 04:10:43 04:12:21 04:13:06 Nov Dec 29