12 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 22 26 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan 6 Feb Mar Apr May Jun 21 Jul Aug Sep Oct Nov Dec 2016 - 7 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 2 Sep 19, 2016 2 instances 15:34:33 16:17:44 30 Oct 3 3 Oct 3, 2016 3 instances 14:54:48 15:07:58 15:52:31 Nov Dec 29