20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:35:20 01:35:52 01:36:08 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 2 Jan 6, 2017 2 instances 16:19:16 16:25:49 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 03:59:20 03:59:27 Jul Aug Sep Oct 2 Nov 2 Dec 25 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 18:35:30 18:41:03 18:41:52 19:01:45 Oct 1 2 Oct 1, 2016 2 instances 03:12:47 03:19:09 3 3 Oct 3, 2016 3 instances 18:56:13 19:02:39 19:05:39 Nov Dec 29