18 instances from 3 years 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2017 - 3 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 10:25:17 11:23:07 Jul Aug Sep Oct Nov Dec 2016 - 13 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 14:06:35 17:40:21 22:39:42 21 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 15:48:09 16:31:28 18:04:03 30 2 Sep 30, 2016 2 instances 21:56:34 23:05:35 Oct 3 3 Oct 3, 2016 3 instances 15:10:16 15:24:19 16:07:55 Nov Dec 29