15 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 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 12:18:49 20:38:37 22 Jul Aug Sep 24 Oct Nov Dec 2017 - 5 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 15:22:41 17:32:36 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 05:20:34 12:08:06 Nov Dec 26