24 instances from 5 years 2020 - 3 instances Jan 19 Feb Mar Apr May Jun 30 Jul Aug Sep Oct Nov 14 Dec 2019 - 3 instances Jan Feb Mar 4 Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 22 26 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 7 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 13:03:20 14:17:59 Jul Aug Sep Oct 3 Nov Dec 27 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 11:18:51 11:29:47 11:37:52 11:46:12 Oct 1 2 Oct 1, 2016 2 instances 18:21:42 18:30:33 4 3 Oct 4, 2016 3 instances 10:37:35 10:50:04 11:47:04 Nov Dec 30