15 instances from 5 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 4 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2018 4 instances 06:50:26 06:50:37 06:55:52 20:40:41 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2017 3 instances 04:06:19 04:08:17 04:08:57 Jul Aug Sep Oct 2 Nov 2 8 Dec 25 2016 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 2 2 Nov 2, 2016 2 instances 19:55:21 21:17:03 Dec