20 instances from 5 years 2020 - 4 instances Jan 22 Feb Mar Apr May Jun Jul 1 Aug Sep Oct Nov 13 15 Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct 27 Nov Dec 2018 - 4 instances Jan 8 9 Feb Mar Apr May Jun 21 2 Jun 21, 2018 2 instances 04:52:39 07:15:19 Jul Aug Sep Oct Nov Dec 2017 - 9 instances Jan 6 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 06:45:25 06:52:09 23 Jul Aug Sep Oct 2 4 Oct 2, 2017 4 instances 04:18:10 04:22:11 04:25:06 06:26:01 Nov Dec 27 2016 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 29