12 instances from 2 years 2017 - 2 instances Jan 7 Feb 3 Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 10:23:29 10:30:37 10:38:31 10:39:40 Oct 1 2 Oct 1, 2016 2 instances 12:02:09 12:05:03 4 3 Oct 4, 2016 3 instances 04:09:28 04:22:14 05:18:52 Nov Dec 30