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 14:38:38 15:05:02 15:07:13 15:22:50 22 3 Jun 22, 2018 3 instances 02:53:07 05:13:55 05:53:00 24 Jul Aug Sep Oct Nov Dec