17 instances from 5 years 2020 - 2 instances Jan 18 Feb Mar Apr May Jun 29 Jul Aug Sep Oct Nov Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 26 Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 22 26 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan 6 Feb Mar Apr May Jun 21 Jul Aug Sep Oct Nov Dec 2016 - 8 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 13:29:26 17:23:23 22:13:25 21 Jul Aug Sep 19 2 Sep 19, 2016 2 instances 16:01:24 18:17:17 30 Oct 3 Nov Dec