21 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 24 27 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 7 Feb Mar Apr May Jun 21 Jul Aug Sep Oct 2 Nov 20 2 Nov 20, 2017 2 instances 17:47:57 18:37:22 Dec 26 2016 - 12 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 21:30:35 21:56:53 22:36:43 21 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 19:18:22 19:23:44 19:40:56 19:46:36 Oct 3 3 Oct 3, 2016 3 instances 17:50:28 18:17:48 19:13:18 Nov Dec 29