13 instances from 4 years 2020 - 1 instance Jan 19 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2017 - 1 instance Jan 8 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 14:24:49 14:59:45 19:54:30 20:14:08 Oct 1 2 Oct 1, 2016 2 instances 20:56:17 22:11:12 4 3 Oct 4, 2016 3 instances 15:30:14 16:03:18 18:44:42 Nov Dec 30