18 instances from 3 years 2020 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 16 Dec 2017 - 7 instances Jan 7 Feb Mar Apr May Jun 22 Jul Aug Sep Oct 3 4 3 Oct 4, 2017 3 instances 01:13:42 01:20:42 01:34:02 Nov Dec 27 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 09:22:44 09:28:55 09:37:39 09:38:33 Oct 1 2 Oct 1, 2016 2 instances 16:27:10 16:34:05 4 3 Oct 4, 2016 3 instances 08:42:27 08:55:22 09:51:58 Nov Dec 30