22 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 17:40:31 23:17:10 22 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 7 Feb Mar Apr May Jun 22 Jul Aug 30 Sep Oct 3 Nov Dec 26 2016 - 13 instances Jan Feb 17 Mar Apr May Jun 23 2 Jun 23, 2016 2 instances 08:46:16 18:24:51 Jul Aug Sep 19 20 3 Sep 20, 2016 3 instances 03:08:11 03:18:50 03:29:36 Oct 1 2 Oct 1, 2016 2 instances 10:07:13 10:08:30 4 3 Oct 4, 2016 3 instances 02:11:49 02:25:13 03:22:08 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16