20 instances from 4 years 2019 - 1 instance Jan Feb 18 Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 3 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 01:46:20 01:48:07 Jul Aug Sep Oct Nov Dec 2016 - 15 instances Jan Feb 17 Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 08:28:40 08:32:44 10:03:19 14:16:18 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 10:05:40 10:06:09 10:10:24 11:28:53 30 Oct 3 4 Oct 3, 2016 4 instances 09:17:09 10:05:43 10:21:58 11:37:40 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16