10 instances from 2 years 2018 - 4 instances Jan Feb Mar Apr May Jun 22 4 Jun 22, 2018 4 instances 16:26:36 18:22:41 18:59:22 19:10:16 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2017 3 instances 10:56:49 11:06:09 11:17:53 Jul Aug Sep Oct 3 Nov 8 Dec 26