19 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:30:58 03:35:04 03:36:34 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 20:22:34 20:25:23 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 11 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 08:40:23 08:51:05 13:19:46 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 17:16:24 17:20:02 17:22:47 Oct 1 3 3 Oct 3, 2016 3 instances 17:23:18 17:28:08 17:28:40 Nov Dec 30 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 18