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 08:59:52 15:40:04 15:40:05 20:36:24 25 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 04:05:41 04:09:32 04:10:12 04:14:04 Oct 1 2 Oct 1, 2016 2 instances 13:03:50 13:12:06 4 3 Oct 4, 2016 3 instances 04:04:39 04:06:18 04:07:02 Nov Dec 29