17 instances from 2 years 2018 - 16 instances Jan Feb Mar Apr May 24 29 Jun 22 2 Jun 22, 2018 2 instances 16:02:01 20:19:30 23 24 Jul 3 5 4 Jul 5, 2018 4 instances 10:28:07 13:58:25 17:12:27 20:32:18 6 5 Jul 6, 2018 5 instances 12:43:19 13:56:57 13:58:40 19:24:36 22:40:06 Aug Sep Oct Nov Dec 2017 - 1 instance Jan Feb Mar Apr May Jun 22 Jul Aug Sep Oct Nov Dec