20 instances from 5 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 3 instances Jan 19 Feb Mar Apr May Jun Jul 2 Aug Sep Oct Nov 14 Dec 2019 - 3 instances Jan Feb Mar Apr May Jun 22 Jul 20 Aug Sep 18 Oct Nov Dec 2017 - 2 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct Nov Dec 2016 - 11 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 3 Sep 20, 2016 3 instances 15:28:39 16:19:18 21:17:46 Oct 1 2 Oct 1, 2016 2 instances 22:09:03 23:22:48 4 3 Oct 4, 2016 3 instances 16:47:46 17:16:49 19:54:26 Nov Dec 30