22 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct Nov Dec 2018 - 2 instances Jan 11 Feb Mar Apr May Jun Jul 16 Aug Sep Oct Nov Dec 2017 - 6 instances Jan 1 9 Feb Mar Apr May Jun 23 Jul Aug Sep Oct 7 Nov Dec 25 27 2016 - 13 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2016 4 instances 09:42:10 11:39:54 14:08:42 16:42:37 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 09:07:19 09:13:13 09:22:15 09:22:56 Oct 1 2 Oct 1, 2016 2 instances 21:02:16 23:41:31 4 3 Oct 4, 2016 3 instances 18:19:29 18:44:24 21:44:38 Nov Dec