14 instances from 2 years 2017 - 2 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct Nov Dec 2016 - 12 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 16:05:06 16:54:08 21:36:00 21:53:30 Oct 1 2 Oct 1, 2016 2 instances 22:46:19 23:59:07 4 3 Oct 4, 2016 3 instances 17:25:35 17:53:12 20:31:34 Nov Dec 30