12 instances from 2 years 2017 - 2 instances Jan 6 7 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 4 Sep 20, 2016 4 instances 04:09:03 04:12:55 04:13:35 04:17:36 Oct 1 2 Oct 1, 2016 2 instances 13:07:07 13:15:15 4 3 Oct 4, 2016 3 instances 04:08:12 04:09:53 04:10:35 Nov Dec 29