20 instances from 3 years 2017 - 2 instances Jan 6 2 Jan 6, 2017 2 instances 15:02:21 15:02:23 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 10:06:01 11:42:27 13:05:27 15:33:36 24 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 04:43:18 04:45:52 04:45:52 04:47:00 Oct 1 2 Oct 1, 2016 2 instances 13:39:33 13:45:17 4 3 Oct 4, 2016 3 instances 04:38:41 04:39:04 04:40:39 Nov Dec 29 2015 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16 18