19 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:30:18 03:30:53 03:35:29 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:21:56 20:24:45 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 08:44:24 09:12:41 11:26:17 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:15:46 17:19:24 17:22:09 Oct 1 3 3 Oct 3, 2016 3 instances 17:22:40 17:27:29 17:28:02 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 17