22 instances from 4 years 2020 - 2 instances Jan 20 Feb Mar Apr May Jun Jul Aug Sep Oct Nov 13 Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 22 24 27 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 07:44:01 07:50:02 Jul Aug Sep Oct 5 Nov Dec 2016 - 13 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 11:52:22 11:56:04 13:00:32 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 14:31:53 14:35:53 14:50:47 14:54:55 30 2 Sep 30, 2016 2 instances 20:58:46 21:01:10 Oct 3 3 Oct 3, 2016 3 instances 13:05:19 13:14:01 13:30:39 Nov Dec 29