17 instances from 5 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 21 Dec 2018 - 1 instance Jan 20 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan 6 Feb Mar Apr May Jun Jul 1 Aug Sep Oct Nov Dec 2016 - 11 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 14:02:50 17:51:48 22:36:59 21 Jul Aug Sep 19 2 Sep 19, 2016 2 instances 15:34:46 16:17:56 30 Oct 3 3 Oct 3, 2016 3 instances 14:55:09 15:08:20 15:52:53 Nov Dec 29