18 instances from 5 years 2021 - 1 instance Jan Feb Mar Apr May Jun 27 Jul Aug Sep Oct Nov Dec 2020 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 20 Dec 2018 - 1 instance Jan 17 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan 8 Feb Mar Apr May Jun Jul 3 Aug Sep Oct Nov Dec 2016 - 12 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2016 2 instances 12:23:41 13:39:19 22 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 16:22:47 18:15:02 18:37:12 Oct 1 2 Oct 1, 2016 2 instances 21:56:18 23:10:26 4 3 Oct 4, 2016 3 instances 16:29:34 17:03:21 19:41:06 Nov Dec 30