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 03:20:03 03:20:06 03:20:13 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:42:42 08:48:19 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 14 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 11:53:35 12:15:25 12:40:45 13:04:24 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 15:29:20 15:42:17 15:50:03 15:53:30 30 2 Sep 30, 2016 2 instances 21:57:22 21:59:53 Oct 3 3 Oct 3, 2016 3 instances 14:04:17 14:12:52 14:29:44 Nov Dec 29