25 instances from 4 years 2020 - 3 instances Jan 18 Feb 12 13 Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:36:17 06:55:14 07:00:30 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 03:21:56 03:39:26 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 14 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 10:20:05 11:00:26 11:04:28 21 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 14:48:48 14:52:51 15:07:53 15:11:50 30 2 Sep 30, 2016 2 instances 21:18:28 21:19:42 Oct 3 3 Oct 3, 2016 3 instances 13:22:53 13:31:42 13:48:58 Nov Dec 29