22 instances from 4 years 2020 - 3 instances Jan 18 Feb Mar Apr May Jun 29 Jul Aug Sep Oct Nov 13 Dec 2019 - 3 instances Jan Feb 27 Mar 5 Apr May Jun Jul Aug Sep Oct 26 Nov Dec 2018 - 10 instances Jan 17 Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 12:22:40 20:41:47 22 23 4 Jun 23, 2018 4 instances 02:27:51 03:20:29 04:25:41 04:45:24 Jul 6 Aug Sep 24 Oct Nov Dec 2017 - 6 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 15:26:27 17:36:21 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 05:27:34 12:11:55 Nov Dec 26