20 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 - 9 instances Jan 4 2 Jan 4, 2018 2 instances 21:14:35 21:14:39 Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 04:51:54 04:51:55 04:51:58 04:54:39 04:54:42 19:59:47 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 14:31:37 14:37:15 14:37:15 14:37:43 Oct 1 2 Oct 1, 2016 2 instances 01:22:10 01:28:44 3 3 Oct 3, 2016 3 instances 19:15:33 19:17:22 19:17:29 Nov Dec