24 instances from 6 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 - 4 instances Jan Feb Mar Apr May Jun 22 Jul 20 Aug Sep 18 Oct 26 Nov Dec 2018 - 2 instances Jan 12 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 15:41:58 16:32:31 21:13:27 21:31:01 Oct 1 2 Oct 1, 2016 2 instances 22:22:24 23:36:17 4 3 Oct 4, 2016 3 instances 17:01:05 17:30:08 20:07:54 Nov Dec 30