19 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:31:04 03:35:11 03:36:40 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:22:41 20:25:30 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 08:51:11 11:25:42 13:19:52 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:16:31 17:20:09 17:22:54 Oct 1 3 3 Oct 3, 2016 3 instances 17:23:24 17:28:14 17:28:47 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 17