18 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:29:25 03:30:00 03:30:55 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:21:04 20:23:54 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 10 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 11:24:49 13:19:58 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:14:55 17:18:33 17:21:12 Oct 1 3 3 Oct 3, 2016 3 instances 17:21:49 17:26:39 17:27:11 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 17