17 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 Dec 2019 - 1 instance Jan Feb Mar Apr May Jun 22 Jul Aug Sep Oct Nov Dec 2018 - 1 instance Jan 20 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan 3 11 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 11 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2016 2 instances 10:57:00 19:10:05 22 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 16:28:21 18:19:37 18:41:53 Oct 1 2 Oct 1, 2016 2 instances 21:55:50 23:09:58 4 3 Oct 4, 2016 3 instances 16:29:15 17:03:03 19:40:47 Nov Dec