15 instances from 2 years 2018 - 13 instances Jan Feb Mar Apr May 24 29 Jun 21 22 4 Jun 22, 2018 4 instances 18:15:49 18:34:05 19:51:56 21:50:28 Jul 5 2 Jul 5, 2018 2 instances 11:06:20 14:26:08 6 3 Jul 6, 2018 3 instances 14:04:43 15:38:04 19:46:30 7 Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun 22 Jul Aug Sep 3 Oct Nov Dec