17 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 - 5 instances Jan 5 Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 12:18:27 20:38:15 22 Jul Aug Sep 24 Oct Nov Dec 2017 - 6 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 14:41:09 16:51:19 23 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 05:19:56 12:07:44 Nov Dec 26