18 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:29:12 03:29:47 03:30:41 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:20:51 20:23:41 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 10 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 09:11:22 09:41:59 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:14:42 17:18:20 17:20:59 Oct 1 3 3 Oct 3, 2016 3 instances 17:21:36 17:26:26 17:26:58 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 17