18 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:36:59 01:37:14 01:37:44 Jul Aug Sep Oct Nov Dec 2017 - 1 instance Jan 6 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 13 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 09:24:03 09:25:04 10:02:31 21 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 08:40:16 08:41:34 08:47:02 08:47:59 30 Oct 3 3 Oct 3, 2016 3 instances 09:11:57 09:11:57 09:11:57 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16