12 instances from 2 years 2018 - 10 instances Jan 5 Feb Mar Apr May Jun Jul 5 4 Jul 5, 2018 4 instances 15:10:50 15:47:05 16:40:17 17:29:04 6 4 Jul 6, 2018 4 instances 12:18:42 16:49:51 17:02:37 23:08:10 7 Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun 22 Jul Aug Sep Oct 23 Nov Dec