20 instances from 4 years 2021 - 1 instance Jan Feb Mar 21 Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 22 7 Jun 22, 2018 7 instances 00:29:56 00:29:59 00:42:16 00:42:20 00:50:38 00:50:41 01:13:15 Jul Aug Sep Oct Nov Dec 2017 - 3 instances Jan 9 Feb Mar Apr May Jun 23 2 Jun 23, 2017 2 instances 08:36:41 08:36:45 Jul Aug Sep Oct Nov Dec 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 02:18:47 02:24:22 02:24:23 02:24:23 Oct 1 2 Oct 1, 2016 2 instances 18:43:46 18:50:05 4 3 Oct 4, 2016 3 instances 17:13:18 17:17:05 17:30:36 Nov Dec