20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:25:47 03:26:22 03:27:15 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 7 2 Jan 7, 2017 2 instances 10:45:44 12:27:31 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:17:24 20:20:20 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 09:02:45 09:46:37 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:11:20 17:14:59 17:17:38 Oct 1 2 Oct 1, 2016 2 instances 01:38:06 01:43:02 3 3 Oct 3, 2016 3 instances 17:18:15 17:23:05 17:23:37 Nov Dec 30