20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 04:06:35 04:06:39 04:06:59 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:06:29 08:12:20 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 12 instances Jan Feb Mar Apr May Jun 20 2 Jun 20, 2016 2 instances 11:19:27 11:31:20 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 14:54:09 15:05:42 15:13:49 15:17:39 30 2 Sep 30, 2016 2 instances 21:21:33 21:24:04 Oct 3 3 Oct 3, 2016 3 instances 13:28:05 13:37:54 13:54:47 Nov Dec 29