25 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 4 instances Jan 20 Feb Mar Apr May Jun 28 Jul Aug Sep Oct Nov 13 16 Dec 2019 - 3 instances Jan Feb Mar Apr May Jun 22 Jul Aug Sep 18 Oct 26 Nov Dec 2018 - 4 instances Jan 1 Feb Mar Apr May Jun 27 Jul 1 2 Aug Sep Oct Nov Dec 2017 - 3 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug 29 Sep Oct Nov Dec 2016 - 10 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 08:46:31 09:08:27 09:13:17 09:30:40 30 2 Sep 30, 2016 2 instances 22:26:22 23:34:46 Oct 3 3 Oct 3, 2016 3 instances 15:40:55 15:55:15 16:41:57 Nov Dec 30