15 instances from 3 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 6 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 07:15:29 07:15:31 07:15:33 07:22:17 07:22:20 20:50:42 Jul Aug Sep Oct Nov Dec 2017 - 8 instances Jan Feb Mar Apr May Jun 21 22 3 Jun 22, 2017 3 instances 01:21:38 17:56:38 18:26:00 Jul Aug Sep Oct 3 2 Oct 3, 2017 2 instances 04:07:44 21:49:54 Nov Dec 25 2 Dec 25, 2017 2 instances 06:29:49 06:29:52