20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:43:48 01:44:02 01:44:25 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 2 Jan 6, 2017 2 instances 16:27:21 16:36:11 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 04:06:58 04:07:05 Jul Aug Sep Oct Nov 2 8 Dec 25 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 18:43:20 18:48:50 18:49:31 19:09:24 Oct 1 2 Oct 1, 2016 2 instances 03:20:49 03:27:02 3 3 Oct 3, 2016 3 instances 19:03:54 19:10:21 19:13:22 Nov Dec 29