18 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 27 Jul Aug Sep Oct Nov Dec 2020 - 3 instances Jan 23 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 18 Oct Nov Dec 2018 - 2 instances Jan 1 7 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 8 19 Feb Mar Apr May Jun 26 Jul Aug 29 2 Aug 29, 2017 2 instances 16:56:58 16:57:56 Sep Oct Nov Dec 2016 - 6 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 1 2 Oct 1, 2016 2 instances 21:58:58 22:46:41 3 3 Oct 3, 2016 3 instances 09:04:40 09:07:50 09:14:45 Nov Dec 30