20 instances from 5 years 2021 - 1 instance Jan Feb Mar 21 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 04:17:49 04:17:50 04:17:53 04:18:24 04:18:27 19:46:22 23 Jul Aug Sep Oct Nov Dec 2017 - 9 instances Jan 7 2 Jan 7, 2017 2 instances 10:12:47 11:10:05 9 Feb Mar Apr May Jun 21 4 Jun 21, 2017 4 instances 02:55:27 04:15:39 04:17:30 04:18:08 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 03:23:29 04:54:36 Nov Dec 2016 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 23 2 Oct 23, 2016 2 instances 03:57:02 05:18:40 Nov Dec