21 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 01:46:02 01:47:50 Jul Aug Sep Oct Nov Dec 2016 - 16 instances Jan Feb 17 Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 08:17:44 08:39:22 09:56:56 14:12:50 21 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 10:05:03 10:05:33 10:09:48 11:28:16 30 Oct 3 4 Oct 3, 2016 4 instances 09:16:32 10:05:07 10:21:22 11:37:04 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16