21 instances from 6 years 2021 - 1 instance Jan Feb Mar 21 Apr May Jun Jul Aug Sep Oct Nov Dec 2020 - 1 instance Jan Feb Mar Apr May Jun Jul 24 Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 8 instances Jan Feb Mar Apr May Jun 21 7 Jun 21, 2018 7 instances 05:04:15 05:04:27 05:07:13 09:55:18 10:05:47 13:01:42 20:05:39 22 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 25 2 Dec 25, 2017 2 instances 05:00:15 05:04:02 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 09:03:49 09:09:25 09:09:26 09:10:20 30 2 Sep 30, 2016 2 instances 17:23:21 17:29:14 Oct 3 2 Oct 3, 2016 2 instances 09:39:29 09:39:51 Nov Dec