21 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 3 instances Jan 20 Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 16 Dec 2019 - 3 instances Jan Feb Mar Apr May Jun 22 Jul Aug Sep 18 Oct 26 Nov Dec 2018 - 1 instance Jan 12 Feb Mar Apr May Jun Jul Aug Sep 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 20 3 Jun 20, 2016 3 instances 14:11:07 17:45:29 22:44:12 21 Jul Aug Sep 19 30 2 Sep 30, 2016 2 instances 21:47:42 22:56:38 Oct 3 3 Oct 3, 2016 3 instances 15:01:13 15:14:21 15:58:50 Nov Dec 30