20 instances from 4 years 2020 - 3 instances Jan 19 Feb Mar Apr May Jun Jul 1 Aug Sep Oct Nov 14 Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2017 - 2 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct Nov Dec 2016 - 13 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2016 2 instances 10:31:44 19:17:03 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 14:23:07 14:58:07 19:52:47 20:10:30 Oct 1 2 Oct 1, 2016 2 instances 20:54:39 22:09:31 4 3 Oct 4, 2016 3 instances 15:28:36 16:01:38 18:43:04 Nov Dec 30