7 instances from 2 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:23:34 01:23:41 01:23:48 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 03:32:39 03:38:37 Jul Aug Sep Oct 2 Nov 2 Dec