20 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 05:02:11 05:02:22 05:02:31 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 09:33:54 09:38:20 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 10 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 13:05:29 13:14:24 13:52:20 13:59:42 Jul Aug Sep 19 2 Sep 19, 2016 2 instances 16:27:57 16:31:02 30 Oct 3 2 Oct 3, 2016 2 instances 14:50:36 15:08:18 Nov Dec 29