20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:25:50 03:26:25 03:27:18 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 7 2 Jan 7, 2017 2 instances 10:45:47 12:27:34 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:17:27 20:20:23 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 09:03:17 09:40:56 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:11:23 17:15:02 17:17:41 Oct 1 2 Oct 1, 2016 2 instances 01:38:10 01:43:05 3 3 Oct 3, 2016 3 instances 17:18:18 17:23:08 17:23:40 Nov Dec 30