20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:43:09 01:43:23 01:43:45 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 2 Jan 6, 2017 2 instances 16:26:34 16:33:05 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 04:06:14 04:06:21 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 18:42:38 18:48:11 18:48:52 19:08:45 Oct 1 2 Oct 1, 2016 2 instances 03:19:56 03:26:23 3 3 Oct 3, 2016 3 instances 19:03:15 19:09:43 19:12:43 Nov Dec 29