19 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:30:05 03:30:39 03:35:00 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:21:43 20:24:32 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 08:51:24 11:23:41 13:19:01 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:15:33 17:19:11 17:21:50 Oct 1 3 3 Oct 3, 2016 3 instances 17:22:27 17:27:17 17:27:50 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 17