20 instances from 5 years 2020 - 3 instances Jan 19 Feb Mar Apr May Jun Jul 1 Aug Sep Oct Nov 14 Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct 27 Nov Dec 2018 - 1 instance Jan Feb Mar Apr May Jun 22 Jul Aug Sep Oct Nov Dec 2017 - 3 instances Jan Feb Mar Apr May Jun 23 Jul Aug Sep Oct 4 Nov Dec 29 2016 - 12 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 15:54:01 16:44:16 21:25:27 21:42:51 Oct 1 2 Oct 1, 2016 2 instances 22:36:19 23:49:45 4 3 Oct 4, 2016 3 instances 17:15:24 17:43:34 20:21:29 Nov Dec 30