14 instances from 2 years 2017 - 2 instances Jan 7 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 14:19:12 14:54:16 19:48:50 20:07:13 Oct 1 2 Oct 1, 2016 2 instances 20:50:49 22:05:40 4 3 Oct 4, 2016 3 instances 15:24:38 15:57:47 18:39:13 Nov Dec 30