23 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 03:21:17 03:21:21 03:21:27 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 08:43:29 08:49:11 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 13 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 12:18:38 12:37:31 13:03:38 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 15:30:08 15:43:05 15:50:51 15:54:19 30 2 Sep 30, 2016 2 instances 21:58:11 22:00:40 Oct 3 3 Oct 3, 2016 3 instances 14:05:06 14:13:40 14:30:31 Nov Dec 29