30 instances from 6 years 2022 - 2 instances Jan Feb Mar Apr May Jun 25 Jul Aug Sep Oct 21 Nov Dec 2020 - 4 instances Jan 18 Feb Mar Apr May Jun 30 Jul Aug Sep Oct Nov 12 13 Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:35:09 11:13:11 19:39:28 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:26:30 15:18:18 Jul Aug Sep Oct 2 Nov Dec 25 26 2016 - 13 instances Jan Feb Mar Apr May Jun 20 21 3 Jun 21, 2016 3 instances 00:43:56 00:47:36 07:09:24 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 15:09:06 17:04:17 18:39:55 19:02:53 30 2 Sep 30, 2016 2 instances 21:38:47 23:05:41 Oct 3 2 Oct 3, 2016 2 instances 16:03:59 17:08:23 Nov Dec 29