24 instances from 4 years 2020 - 2 instances Jan Feb Mar Apr May Jun 28 Jul 4 Aug Sep Oct Nov Dec 2018 - 4 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2018 4 instances 04:18:14 04:18:44 04:21:39 04:25:03 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 04:01:35 04:06:38 Jul Aug Sep Oct 2 Nov Dec 2016 - 14 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 09:01:06 10:31:00 11:20:39 11:26:27 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 10:20:27 10:24:58 10:25:01 10:25:52 30 2 Sep 30, 2016 2 instances 18:26:22 18:31:56 Oct 3 3 Oct 3, 2016 3 instances 10:29:33 10:29:43 10:29:44 Nov Dec 29