17 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul 20 Aug Sep Oct Nov Dec 2018 - 6 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 01:17:22 01:17:30 01:18:30 01:18:34 01:18:35 01:18:41 Jul Aug Sep Oct Nov Dec 2017 - 8 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2017 4 instances 09:42:36 09:42:42 10:28:53 10:29:00 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 01:20:09 01:20:17 Nov Dec 25 2 Dec 25, 2017 2 instances 02:15:48 02:15:55 2016 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 3 2 Oct 3, 2016 2 instances 08:21:55 08:22:01 Nov Dec