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 10:24:31 10:31:40 10:39:34 10:40:43 Oct 1 2 Oct 1, 2016 2 instances 12:19:13 12:22:42 4 3 Oct 4, 2016 3 instances 04:26:46 04:39:27 05:36:13 Nov Dec 30