11 instances from 2 years 2017 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 20 Dec 2016 - 10 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 14:31:16 15:06:11 20:01:01 20:20:29 Oct 1 4 3 Oct 4, 2016 3 instances 15:36:18 16:09:23 18:50:47 Nov Dec