17 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 2 instances Jan Feb Mar Apr May Jun 28 Jul Aug Sep Oct Nov 13 Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct 26 Nov Dec 2018 - 1 instance Jan 8 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 10:22:43 11:20:00 Jul Aug Sep Oct 8 Nov Dec 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 2 Sep 19, 2016 2 instances 15:30:38 16:13:57 30 2 Sep 30, 2016 2 instances 21:53:24 23:02:35 Oct 3 3 Oct 3, 2016 3 instances 15:07:13 15:21:15 16:04:49 Nov Dec 29