20 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 04:13:06 04:13:36 04:16:32 04:19:56 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 03:57:50 04:02:51 Jul Aug Sep Oct 2 Nov Dec 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 10:18:45 10:23:15 10:23:19 10:23:59 30 2 Sep 30, 2016 2 instances 18:24:39 18:30:14 Oct 3 3 Oct 3, 2016 3 instances 10:27:51 10:28:01 10:28:01 Nov Dec 29