18 instances from 4 years 2020 - 1 instance Jan Feb Mar Apr May Jun Jul 31 Aug Sep Oct Nov Dec 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 01:16:48 01:16:56 01:17:01 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 6 2 Jan 6, 2017 2 instances 12:51:42 12:51:51 Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 01:22:10 01:23:59 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 8 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 4 Sep 19, 2016 4 instances 08:18:13 08:23:49 08:23:49 08:24:00 30 2 Sep 30, 2016 2 instances 16:18:54 16:24:07 Oct 3 Nov Dec 29