12 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 4 Jun 21, 2018 4 instances 15:12:45 15:41:24 15:53:29 15:56:33 22 3 Jun 22, 2018 3 instances 03:07:35 10:46:17 10:58:43 Jul 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 21:01:25 21:01:27 Dec 25 26