19 instances from 5 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 Jul Aug Sep Oct Nov 13 19 Dec 2018 - 1 instance Jan 6 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan 7 Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2016 - 13 instances Jan Feb Mar Apr May Jun 22 23 24 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 14:49:04 15:23:37 20:20:02 20:37:02 Oct 1 2 Oct 1, 2016 2 instances 21:21:39 22:37:57 4 3 Oct 4, 2016 3 instances 15:55:59 16:30:41 19:10:33 Nov Dec 30