12 instances from 2 years 2017 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 20 2 Nov 20, 2017 2 instances 20:01:20 21:21:16 Dec 2016 - 10 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 14:36:20 15:11:14 20:06:12 20:25:33 Oct 1 4 3 Oct 4, 2016 3 instances 15:42:06 16:15:09 18:56:35 Nov Dec