18 instances from 4 years 2020 - 3 instances Jan Feb Mar Apr May Jun Jul 3 Aug Sep Oct Nov 13 19 Dec 2018 - 3 instances Jan 5 Feb Mar Apr May Jun 22 27 Jul Aug Sep Oct Nov Dec 2017 - 3 instances Jan 1 9 Feb Mar Apr May Jun Jul Aug Sep Oct 5 Nov Dec 2016 - 9 instances Jan Feb Mar Apr May Jun 23 2 Jun 23, 2016 2 instances 14:17:58 21:11:08 24 Jul Aug Sep 21 4 Sep 21, 2016 4 instances 22:41:04 22:45:49 23:31:43 23:59:59 Oct 3 2 Oct 3, 2016 2 instances 14:23:17 16:24:55 Nov Dec