8 instances from 2 years 2018 - 4 instances Jan Feb Mar Apr May Jun 22 4 Jun 22, 2018 4 instances 16:28:27 18:25:56 19:02:39 19:13:38 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 22:16:50 23:48:24 Jul Aug Sep Oct 3 Nov Dec 26