25 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 20:27:49 20:41:34 22 3 Jun 22, 2018 3 instances 04:46:34 11:16:56 11:29:06 23 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan 6 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 13:05:19 13:29:05 13:49:50 19:14:35 19:33:48 19:57:29 Jul Aug Sep Oct 2 Nov Dec 25 26 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:40:33 11:46:14 11:46:24 11:47:48 30 2 Sep 30, 2016 2 instances 21:33:14 21:38:36 Oct 3 2 Oct 3, 2016 2 instances 14:46:01 14:46:19 Nov Dec