20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:25:31 03:26:06 03:26:59 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 7 2 Jan 7, 2017 2 instances 10:45:28 12:27:08 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:17:08 20:20:04 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 09:02:29 09:43:10 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:11:03 17:14:43 17:17:22 Oct 1 2 Oct 1, 2016 2 instances 01:37:51 01:42:46 3 3 Oct 3, 2016 3 instances 17:17:58 17:22:49 17:23:21 Nov Dec 30