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 29 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 03:37:03 11:15:01 19:41:18 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct 5 Nov Dec 25 29 2016 - 14 instances Jan Feb Mar Apr May Jun 21 22 3 Jun 22, 2016 3 instances 03:08:45 03:42:28 13:17:42 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 14:07:28 17:39:07 22:43:47 23:02:21 Oct 1 2 Oct 1, 2016 2 instances 21:16:16 23:57:23 4 3 Oct 4, 2016 3 instances 18:34:01 18:58:54 21:58:55 Nov Dec 30