15 instances from 4 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 1 instance Jan Feb Mar Apr May Jun 21 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan 7 4 Jan 7, 2017 4 instances 02:54:27 02:54:42 15:35:33 15:35:44 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2016 - 9 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 08:37:10 08:42:30 08:42:35 08:43:31 Oct 1 2 Oct 1, 2016 2 instances 00:04:55 00:10:58 3 Nov Dec 29 2 Dec 29, 2016 2 instances 23:11:05 23:11:20