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 09:08:28 15:43:54 15:44:52 20:24:49 25 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 04:02:52 04:06:42 04:07:23 04:11:14 Oct 1 2 Oct 1, 2016 2 instances 13:01:02 13:09:20 4 3 Oct 4, 2016 3 instances 03:59:35 04:01:52 04:04:16 Nov Dec 29