21 instances from 4 years 2020 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 Dec 2018 - 3 instances Jan 8 2 Jan 8, 2018 2 instances 03:19:21 17:25:37 Feb Mar Apr May Jun 22 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 3 11 19 Feb Mar Apr May Jun Jul 4 Aug Sep Oct 8 3 Oct 8, 2017 3 instances 00:09:21 00:27:39 01:31:06 Nov Dec 2016 - 10 instances Jan Feb Mar Apr May Jun 23 3 Jun 23, 2016 3 instances 00:06:20 00:52:26 05:38:23 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 13:56:09 14:06:53 14:14:50 14:16:04 30 Oct 4 2 Oct 4, 2016 2 instances 22:23:31 23:48:24 Nov Dec