8 instances from 2 years 2018 - 7 instances Jan Feb Mar Apr May 25 Jun Jul 5 2 Jul 5, 2018 2 instances 11:13:01 19:56:55 6 3 Jul 6, 2018 3 instances 11:18:55 12:26:32 16:54:48 7 Aug Sep Oct Nov Dec 2017 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 2 Oct Nov Dec