15 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 02:19:07 02:19:33 02:20:07 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 10:14:24 10:14:41 Jul Aug Sep Oct Nov Dec 25 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 3 Sep 19, 2016 3 instances 16:26:52 16:31:41 16:31:45 Oct 1 2 Oct 1, 2016 2 instances 00:54:39 00:59:48 3 2 Oct 3, 2016 2 instances 16:39:46 16:40:21 Nov Dec 29