10 instances from 2 years 2018 - 8 instances Jan Feb Mar Apr May 24 25 Jun 23 Jul 5 3 Jul 5, 2018 3 instances 14:59:04 17:46:54 20:10:02 6 2 Jul 6, 2018 2 instances 18:31:40 19:35:51 Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun 22 Jul Aug Sep 1 Oct Nov Dec