7 instances from 2 years 2018 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 16:23:51 23:54:07 26 Jul 6 Aug Sep Oct Nov Dec 2017 - 3 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 21:28:15 21:28:18 Nov Dec 25