19 instances from 4 years 2021 - 1 instance Jan Feb Mar Apr May Jun 26 Jul Aug Sep Oct Nov Dec 2020 - 3 instances Jan 19 Feb Mar Apr May Jun Jul 1 Aug Sep Oct Nov 14 Dec 2017 - 4 instances Jan 8 Feb Mar Apr May Jun 23 Jul Aug Sep Oct Nov 20 2 Nov 20, 2017 2 instances 20:02:01 21:21:59 Dec 2016 - 11 instances Jan Feb Mar Apr May Jun 21 22 Jul Aug Sep 20 4 Sep 20, 2016 4 instances 14:40:54 15:15:30 20:11:32 20:30:18 Oct 1 4 3 Oct 4, 2016 3 instances 15:46:42 16:19:31 19:01:12 Nov Dec 30