20 instances from 5 years 2020 - 4 instances Jan 18 Feb Mar Apr May Jun 30 Jul Aug Sep Oct Nov 12 13 Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:21:36 11:03:36 19:28:16 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:20:53 15:12:56 Jul Aug Sep Oct 2 Nov Dec 25 26 2016 - 6 instances Jan Feb Mar Apr May Jun Jul Aug Sep 26 4 Sep 26, 2016 4 instances 01:34:18 05:38:44 06:21:34 09:23:08 Oct 7 2 Oct 7, 2016 2 instances 14:49:59 18:29:01 Nov Dec