19 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 2 instances Jan Feb Mar Apr May Jun Jul 1 Aug Sep Oct Nov 14 Dec 2019 - 3 instances Jan Feb Mar Apr May Jun Jul 20 Aug Sep 18 Oct 26 Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 24 27 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct 4 Nov Dec 29 2016 - 6 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 1 2 Oct 1, 2016 2 instances 21:20:40 22:36:57 4 3 Oct 4, 2016 3 instances 15:55:00 16:29:27 19:09:34 Nov Dec 30