19 instances from 5 years 2020 - 1 instance Jan 19 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct 27 Nov Dec 2018 - 2 instances Jan Feb Mar Apr May Jun 22 27 Jul Aug Sep Oct Nov Dec 2017 - 3 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct 5 Nov Dec 2016 - 12 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 16:28:06 17:16:24 21:58:54 22:16:30 Oct 1 2 4 3 Oct 4, 2016 3 instances 17:48:59 18:16:45 21:12:48 Nov Dec 30