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 10:29:04 10:36:15 10:44:06 10:45:15 Oct 1 2 Oct 1, 2016 2 instances 15:50:06 15:56:33 4 3 Oct 4, 2016 3 instances 07:55:34 08:06:56 09:04:03 Nov Dec 30