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 04:07:33 04:11:23 04:12:03 04:16:00 Oct 1 2 Oct 1, 2016 2 instances 13:05:45 13:13:57 4 3 Oct 4, 2016 3 instances 04:06:54 04:08:34 04:09:17 Nov Dec 29