23 instances from 4 years 2020 - 3 instances Jan 20 Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 15 Dec 2018 - 4 instances Jan 1 Feb Mar Apr May Jun 26 Jul 2 12 Aug Sep Oct Nov Dec 2017 - 7 instances Jan 1 9 Feb Mar Apr May Jun 26 Jul Aug Sep Oct 6 7 2 Oct 7, 2017 2 instances 00:04:23 00:59:04 8 Nov Dec 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 12:26:32 12:37:41 12:43:18 12:51:32 Oct 1 2 Oct 1, 2016 2 instances 19:26:43 19:37:25 4 3 Oct 4, 2016 3 instances 11:44:40 11:55:12 12:53:45 Nov Dec