18 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:29:02 03:29:37 03:30:31 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:20:41 20:23:32 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 08:58:57 08:59:59 09:26:34 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:14:32 17:18:11 17:20:50 Oct 1 3 3 Oct 3, 2016 3 instances 17:21:27 17:26:16 17:26:49 Nov Dec 30