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 12:23:11 20:42:09 22 23 4 Jun 23, 2018 4 instances 02:18:54 03:12:57 04:10:44 04:55:17 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 15:26:58 17:36:53 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 05:28:38 12:12:27 Nov Dec 26