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 14:38:08 15:04:32 15:06:15 15:22:19 22 3 Jun 22, 2018 3 instances 02:52:55 05:13:25 05:52:30 24 Jul Aug Sep Oct Nov Dec