22 instances from 4 years 2020 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 Dec 2018 - 2 instances Jan 15 16 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 7 Feb Mar Apr May Jun Jul 2 Aug Sep Oct 8 3 Oct 8, 2017 3 instances 20:00:49 20:21:29 21:05:14 Nov Dec 2016 - 14 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 19:54:11 21:29:38 21 2 Jun 21, 2016 2 instances 01:19:40 04:11:25 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 14:56:40 15:11:38 15:46:24 16:36:03 30 2 Sep 30, 2016 2 instances 22:20:44 22:36:49 Oct 3 3 Oct 3, 2016 3 instances 13:35:31 14:31:42 14:34:12 Nov Dec 30