12 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 07:36:18 07:36:27 07:44:47 17:24:03 Jul Aug Sep Oct Nov Dec 2017 - 5 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2017 3 instances 03:47:58 03:50:09 03:50:53 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 4 Dec