20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:43:42 01:43:56 01:44:19 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 2 Jan 6, 2017 2 instances 16:27:15 16:36:05 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 04:06:52 04:06:59 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 18:43:13 18:48:44 18:49:25 19:09:18 Oct 1 2 Oct 1, 2016 2 instances 03:20:43 03:26:56 3 3 Oct 3, 2016 3 instances 19:03:47 19:10:15 19:13:16 Nov Dec 29