19 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:28:37 03:29:12 03:30:06 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:20:16 20:23:07 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 09:47:28 10:08:09 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:14:07 17:17:46 17:20:24 Oct 1 2 Oct 1, 2016 2 instances 01:40:53 01:45:48 3 3 Oct 3, 2016 3 instances 17:21:02 17:25:51 17:26:24 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 18