12 instances from 2 years 2018 - 8 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2018 4 instances 15:13:06 15:41:46 15:53:49 15:56:54 22 3 Jun 22, 2018 3 instances 03:07:44 10:46:38 10:59:03 Jul 7 Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 8 2 Nov 8, 2017 2 instances 21:01:52 21:01:54 Dec 25 26