28 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 6 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 20:11:30 20:25:15 22 4 Jun 22, 2018 4 instances 04:39:33 07:26:08 11:01:02 11:13:17 Jul Aug Sep Oct Nov Dec 2017 - 11 instances Jan 6 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 12:49:14 13:12:46 13:33:53 18:58:53 19:18:01 19:41:50 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 12:57:35 20:07:53 Nov Dec 25 26 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:24:19 11:29:55 11:29:56 11:31:29 30 2 Sep 30, 2016 2 instances 21:04:20 21:11:40 Oct 3 3 Oct 3, 2016 3 instances 14:10:44 14:10:50 14:12:23 Nov Dec 29