21 instances from 5 years 2021 - 1 instance Jan Feb Mar Apr May Jun 27 Jul Aug Sep Oct Nov Dec 2020 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 Dec 2018 - 4 instances Jan 6 Feb Mar Apr May Jun 28 29 Jul 12 Aug Sep Oct Nov Dec 2017 - 3 instances Jan 6 Feb Mar Apr May Jun 21 Jul Aug Sep Oct Nov Dec 31 2016 - 12 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 13:14:54 17:27:39 22:00:24 21 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 15:57:50 16:41:02 18:13:48 30 2 Sep 30, 2016 2 instances 22:05:40 23:14:31 Oct 3 3 Oct 3, 2016 3 instances 15:19:18 15:33:17 16:16:53 Nov Dec