8 instances from 2 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 04:31:52 11:35:19 20:00:48 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:37:44 15:29:09 Jul Aug Sep Oct 2 Nov Dec 25 26