20 instances from 3 years 2017 - 5 instances Jan 6 2 Jan 6, 2017 2 instances 15:04:37 15:04:40 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 03:14:42 03:16:53 Jul Aug Sep Oct 2 Nov Dec 2016 - 14 instances Jan Feb 17 Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 14:48:58 17:30:18 21 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 02:21:07 02:24:05 02:28:54 02:29:12 Oct 1 2 Oct 1, 2016 2 instances 11:16:29 11:22:11 4 3 Oct 4, 2016 3 instances 02:00:16 02:21:47 02:21:49 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16