16 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:37:18 03:38:02 03:38:59 Jul Aug Sep Oct Nov Dec 2017 - 3 instances Jan Feb Mar Apr May Jun 21 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 9 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 08:47:38 08:52:24 10:37:35 13:16:29 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:23:36 17:23:58 17:26:38 Oct 3 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 18