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 02:55:13 10:48:55 19:12:07 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:02:52 14:55:33 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 00:43:38 00:47:18 07:03:50 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 15:01:30 16:57:22 18:32:31 18:55:49 30 Oct 3 3 Oct 3, 2016 3 instances 15:55:54 16:14:12 16:59:56 Nov Dec 29