28 instances from 4 years 2020 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 15 Dec 2018 - 4 instances Jan 1 Feb Mar Apr May Jun Jul 2 3 4 Aug Sep Oct Nov Dec 2017 - 8 instances Jan 9 19 Feb Mar Apr May Jun 22 26 Jul Aug Sep Oct 5 7 8 2 Oct 8, 2017 2 instances 00:16:09 00:45:08 Nov Dec 2016 - 14 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 15:56:33 16:42:26 16:47:34 18:32:29 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 13:21:25 13:31:26 13:39:52 13:41:36 Oct 1 2 Oct 1, 2016 2 instances 11:32:12 11:34:43 4 3 Oct 4, 2016 3 instances 03:38:11 03:51:16 04:48:45 Nov Dec 31