23 instances from 5 years 2020 - 2 instances Jan 18 Feb Mar Apr May Jun 29 Jul Aug Sep Oct Nov Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2018 - 4 instances Jan 2 Feb Mar Apr May Jun 21 22 24 Jul Aug Sep Oct Nov Dec 2017 - 3 instances Jan 6 Feb Mar Apr May Jun 21 Jul Aug Sep Oct 9 Nov Dec 2016 - 12 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 14:19:10 17:39:21 22:46:44 21 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 15:58:50 16:41:59 18:14:49 30 2 Sep 30, 2016 2 instances 22:06:47 23:15:36 Oct 3 3 Oct 3, 2016 3 instances 15:20:25 15:34:25 16:17:59 Nov Dec