18 instances from 4 years 2018 - 1 instance Jan Feb Mar Apr May Jun 21 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 7 Feb Mar Apr May Jun 22 Jul Aug Sep Oct 3 Nov Dec 26 2016 - 12 instances Jan Feb Mar Apr May Jun 23 2 Jun 23, 2016 2 instances 08:39:36 18:30:01 Jul Aug Sep 19 20 3 Sep 20, 2016 3 instances 03:06:33 03:17:06 03:28:01 Oct 1 2 Oct 1, 2016 2 instances 10:05:36 10:06:52 4 3 Oct 4, 2016 3 instances 02:10:08 02:23:33 03:20:27 Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16