25 instances from 4 years 2018 - 5 instances Jan 7 8 Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:54:36 02:18:19 02:20:31 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 02:27:58 02:35:02 23 Jul Aug Sep Oct 2 Nov Dec 2016 - 14 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 10:23:08 14:11:56 17:21:01 22:01:55 Jul Aug Sep 19 20 3 Sep 20, 2016 3 instances 03:07:33 03:18:08 03:29:00 Oct 1 2 Oct 1, 2016 2 instances 10:06:35 10:07:52 4 3 Oct 4, 2016 3 instances 02:11:07 02:24:32 03:21:27 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16