4 instances from 2 years 2017 - 2 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 10:08:45 10:09:03 Jul Aug Sep Oct Nov Dec 2016 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 2 Sep 19, 2016 2 instances 16:21:22 16:26:05 Oct Nov Dec