19 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:30:31 03:31:06 03:36:04 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:22:09 20:24:58 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 08:40:39 08:44:49 08:52:21 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:15:59 17:19:37 17:22:22 Oct 1 3 3 Oct 3, 2016 3 instances 17:22:52 17:27:42 17:28:15 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 18