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 14:19:31 14:54:35 19:49:09 20:07:32 Oct 1 2 Oct 1, 2016 2 instances 20:51:07 22:05:59 4 3 Oct 4, 2016 3 instances 15:24:58 15:58:06 18:39:32 Nov Dec 30