24 instances from 5 years 2021 - 1 instance Jan Feb Mar Apr May Jun 27 Jul Aug Sep Oct Nov Dec 2020 - 1 instance Jan Feb Mar Apr May Jun 28 Jul Aug Sep Oct Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:21:07 03:21:11 03:21:17 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:42:23 08:48:03 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 14 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 11:52:01 12:16:12 12:39:31 13:00:27 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 15:29:04 15:42:01 15:49:48 15:53:15 30 2 Sep 30, 2016 2 instances 21:57:07 21:59:37 Oct 3 3 Oct 3, 2016 3 instances 14:04:01 14:12:37 14:29:28 Nov Dec 29