12 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun Jul 5 6 2 Jul 6, 2018 2 instances 17:11:21 17:15:24 Aug Sep Oct Nov Dec 2017 - 1 instance Jan 7 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 8 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 12:53:35 14:11:58 19:22:20 Jul Aug Sep Oct 1 2 Oct 1, 2016 2 instances 14:26:02 16:07:55 4 2 Oct 4, 2016 2 instances 06:23:43 06:32:35 Nov Dec 30