18 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 02:02:21 02:02:45 02:03:19 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 04:29:06 04:29:06 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 10:46:30 10:51:53 10:51:59 10:54:33 30 Oct 3 3 Oct 3, 2016 3 instances 11:01:20 11:01:23 11:01:25 Nov Dec 29