12 instances from 4 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 07:35:51 07:36:00 07:44:19 16:46:56 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 9 Feb Mar Apr May Jun 21 3 Jun 21, 2017 3 instances 03:47:12 03:49:23 03:50:07 Jul Aug Sep Oct 2 Nov Dec 25