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 10:27:23 10:34:33 10:42:25 10:43:34 Oct 1 2 Oct 1, 2016 2 instances 15:03:18 15:09:09 4 3 Oct 4, 2016 3 instances 07:10:00 07:22:08 08:18:22 Nov Dec 30