22 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 27 Jul Aug Sep Oct Nov Dec 2020 - 4 instances Jan 20 Feb Mar Apr May Jun 30 Jul Aug Sep Oct Nov 13 15 Dec 2019 - 1 instance Jan Feb Mar Apr May Jun 22 Jul Aug Sep Oct Nov Dec 2018 - 3 instances Jan 12 Feb Mar Apr May Jun Jul 11 13 Aug Sep Oct Nov Dec 2017 - 3 instances Jan 2 11 Feb Mar Apr May Jun 28 Jul Aug Sep Oct Nov Dec 2016 - 10 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 19 3 Sep 19, 2016 3 instances 15:49:20 16:32:39 18:05:18 30 2 Sep 30, 2016 2 instances 21:57:44 23:06:46 Oct 3 3 Oct 3, 2016 3 instances 15:11:30 15:25:30 16:09:06 Nov Dec