13 instances from 3 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 4 Jun 21, 2018 4 instances 15:13:25 15:42:03 15:54:06 15:57:11 22 3 Jun 22, 2018 3 instances 03:07:51 10:46:55 10:59:20 Jul 9 Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 8 2 Nov 8, 2017 2 instances 21:02:14 21:02:17 Dec 25 26