18 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 02:01:37 02:02:02 02:02:36 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 04:28:16 04:28:16 Jul Aug Sep Oct 2 Nov 20 Dec 25 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 10:45:40 10:51:03 10:51:10 10:53:43 30 Oct 3 3 Oct 3, 2016 3 instances 11:00:31 11:00:34 11:00:36 Nov Dec 29