18 instances from 3 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 2 Jan 6, 2017 2 instances 12:39:06 12:39:20 Feb Mar Apr May Jun 21 Jul Aug 29 Sep Oct Nov 2 21 2 Nov 21, 2017 2 instances 01:51:26 02:27:26 Dec 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 09:02:00 09:08:09 09:08:12 09:16:44 30 2 Sep 30, 2016 2 instances 17:24:07 17:29:51 Oct 3 3 Oct 3, 2016 3 instances 09:33:13 09:33:14 09:33:16 Nov Dec 29