15 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 02:19:20 02:19:46 02:20:19 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 10:14:37 10:14:53 Jul Aug Sep Oct Nov Dec 25 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 3 Sep 19, 2016 3 instances 16:27:05 16:31:53 16:31:57 Oct 1 2 Oct 1, 2016 2 instances 00:54:52 01:00:00 3 2 Oct 3, 2016 2 instances 16:39:59 16:40:34 Nov Dec 29