20 instances from 5 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 2 instances Jan 21 Feb Mar Apr May Jun Jul Aug Sep Oct Nov 12 Dec 2018 - 3 instances Jan 1 8 Feb Mar Apr May Jun Jul 13 Aug Sep Oct Nov Dec 2017 - 4 instances Jan 7 Feb Mar Apr May Jun 26 Jul Aug 29 2 Aug 29, 2017 2 instances 16:29:03 16:50:00 Sep Oct Nov Dec 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 10:54:31 11:05:24 11:09:48 11:10:48 30 2 Sep 30, 2016 2 instances 21:51:49 23:00:59 Oct 3 3 Oct 3, 2016 3 instances 15:05:38 15:19:40 16:03:13 Nov Dec 30