20 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 07:06:13 09:12:14 09:44:37 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 07:14:37 07:20:57 Jul Aug 29 Sep Oct 2 Nov Dec 25 2016 - 12 instances Jan Feb Mar Apr May Jun 20 21 22 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 14:13:19 14:23:30 14:32:03 14:36:08 30 2 Sep 30, 2016 2 instances 20:38:37 20:41:16 Oct 3 3 Oct 3, 2016 3 instances 12:45:26 12:54:07 13:10:38 Nov Dec