18 instances from 4 years 2021 - 1 instance Jan Feb Mar 20 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 2018 - 7 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 04:52:08 04:52:11 04:52:12 04:54:55 04:54:59 19:59:52 23 Jul Aug Sep Oct Nov Dec 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 15:47:33 15:53:11 15:53:17 15:53:41 Oct 1 2 Oct 1, 2016 2 instances 03:06:47 03:14:44 3 3 Oct 3, 2016 3 instances 21:23:07 21:24:41 21:24:41 Nov Dec