9 instances from 2 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 15:14:53 15:43:34 15:56:13 15:58:40 22 3 Jun 22, 2018 3 instances 03:08:27 10:48:20 11:00:45 Jul 7 Aug Sep Oct Nov Dec