20 instances from 3 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 04:13:44 04:13:45 04:14:03 08:30:15 08:39:04 19:44:56 24 Jul Aug Sep Oct Nov Dec 2017 - 12 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2017 4 instances 02:51:51 04:31:57 04:33:50 04:34:25 Jul Aug 28 Sep Oct 2 2 Oct 2, 2017 2 instances 03:19:04 05:18:26 Nov 2 2 Nov 2, 2017 2 instances 16:49:05 16:49:08 8 2 Nov 8, 2017 2 instances 13:35:36 13:35:38 Dec 25