22 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 17:44:48 23:21:27 22 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 7 Feb Mar Apr May Jun 22 Jul Aug Sep Oct 3 Nov Dec 26 2016 - 14 instances Jan Feb 17 Mar Apr May Jun 21 23 2 Jun 23, 2016 2 instances 08:43:30 18:26:08 Jul Aug Sep 19 20 3 Sep 20, 2016 3 instances 03:12:08 03:23:07 03:33:38 Oct 1 2 Oct 1, 2016 2 instances 10:11:08 10:12:28 4 3 Oct 4, 2016 3 instances 02:15:48 02:29:12 03:26:10 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16