20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 02:49:48 02:50:21 02:50:52 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 7 2 Jan 7, 2017 2 instances 08:09:01 11:17:04 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 19:07:16 19:11:26 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 23 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 05:46:29 05:47:52 05:59:48 06:05:37 Oct 1 2 Oct 1, 2016 2 instances 16:27:22 18:05:26 4 3 Oct 4, 2016 3 instances 05:47:52 08:07:39 08:12:32 Nov Dec 30