10 instances from 4 years 2018 - 2 instances Jan Feb Mar Apr May Jun Jul 3 6 Aug Sep Oct Nov Dec 2017 - 3 instances Jan Feb Mar Apr May Jun Jul 29 Aug Sep 26 2 Sep 26, 2017 2 instances 13:15:54 13:15:57 Oct Nov Dec 2016 - 4 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 30 Oct 3 2 Oct 3, 2016 2 instances 11:55:30 11:55:33 Nov Dec 2014 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 7 Dec