19 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 19 Dec 2018 - 2 instances Jan 6 Feb Mar Apr May Jun Jul 12 Aug Sep Oct Nov Dec 2017 - 2 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct Nov Dec 2016 - 12 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 16:02:13 16:51:15 21:33:06 21:50:36 Oct 1 2 Oct 1, 2016 2 instances 22:43:26 23:56:13 4 3 Oct 4, 2016 3 instances 17:22:41 17:50:19 20:28:40 Nov Dec 30