20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 27 2 Jun 27, 2018 2 instances 19:01:38 22:03:56 29 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct 4 Nov Dec 28 2016 - 13 instances Jan Feb Mar Apr May Jun 20 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 14:21:11 14:56:12 19:50:50 20:02:23 Oct 1 2 Oct 1, 2016 2 instances 20:52:44 22:07:34 4 3 Oct 4, 2016 3 instances 14:48:14 15:59:42 18:41:08 Nov Dec 30