20 instances from 4 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 3 instances Jan 1 2 Jan 1, 2018 2 instances 03:57:34 03:57:37 Feb Mar Apr May Jun 29 Jul Aug Sep Oct Nov Dec 2017 - 9 instances Jan 6 2 Jan 6, 2017 2 instances 18:01:47 18:02:11 Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 16:29:10 16:29:13 16:53:37 16:53:40 17:11:08 17:11:12 Jul Aug Sep Oct Nov 21 Dec 2016 - 7 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 08:35:00 08:40:18 08:40:22 08:41:22 30 Oct 3 Nov Dec 29