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 - 7 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 04:19:56 04:19:57 04:20:00 04:20:44 04:20:47 19:47:07 23 Jul Aug Sep Oct Nov Dec 2017 - 11 instances Jan Feb Mar Apr May Jun 21 5 Jun 21, 2017 5 instances 02:57:26 03:06:04 04:16:12 04:18:03 04:18:41 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 03:25:17 04:55:05 Nov 2 2 Nov 2, 2017 2 instances 22:45:37 22:45:39 8 2 Nov 8, 2017 2 instances 22:40:07 22:40:09 Dec