18 instances from 4 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 8 instances Jan Feb Mar Apr May Jun 21 7 Jun 21, 2018 7 instances 07:01:18 07:01:19 07:06:35 18:55:50 19:06:46 19:11:06 20:45:07 22 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 25 2 Dec 25, 2017 2 instances 06:11:21 15:27:30 2016 - 7 instances Jan Feb Mar Apr May Jun Jul Aug Sep 19 2 Sep 19, 2016 2 instances 11:12:48 11:20:03 30 2 Sep 30, 2016 2 instances 20:46:02 20:54:07 Oct 3 3 Oct 3, 2016 3 instances 13:44:57 13:45:03 13:46:58 Nov Dec