29 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 8 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 20:27:04 20:40:47 20:41:14 22 4 Jun 22, 2018 4 instances 04:46:16 11:16:12 11:28:21 16:22:30 23 Jul Aug Sep Oct Nov Dec 2017 - 11 instances Jan 6 7 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 13:04:35 13:28:21 13:49:07 19:13:52 19:33:05 19:56:46 Jul Aug Sep Oct 2 Nov Dec 25 26 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:39:48 11:45:28 11:45:39 11:47:03 30 2 Sep 30, 2016 2 instances 21:32:19 21:37:29 Oct 3 2 Oct 3, 2016 2 instances 14:44:51 14:45:01 Nov Dec 29