24 instances from 6 years 2020 - 1 instance Jan Feb Mar Apr May Jun 27 Jul Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar 5 Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 4 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2018 4 instances 01:22:47 02:39:33 02:39:41 02:39:51 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:31:09 16:26:31 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 12 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 09:32:44 10:31:46 11:13:58 11:24:57 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 09:33:34 09:38:36 09:38:54 30 2 Sep 30, 2016 2 instances 17:26:57 17:32:02 Oct 3 2 Oct 3, 2016 2 instances 09:32:00 09:41:41 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16