19 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 16:08:41 16:08:45 16:20:45 16:20:48 16:24:23 16:24:27 22 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2017 4 instances 02:53:29 04:15:09 04:16:59 04:17:38 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 03:22:10 04:54:17 Nov 2 2 Nov 2, 2017 2 instances 23:10:05 23:10:08 8 2 Nov 8, 2017 2 instances 22:39:49 22:39:51 Dec