8 instances from 2 years 2018 - 4 instances Jan Feb Mar Apr May Jun 22 4 Jun 22, 2018 4 instances 16:29:32 18:27:36 19:04:17 19:15:28 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 22:18:02 23:49:39 Jul Aug Sep Oct 3 Nov Dec 26