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 3 Jun 21, 2018 3 instances 20:32:58 20:46:43 20:48:07 22 4 Jun 22, 2018 4 instances 04:48:40 11:21:55 11:34:03 23:53:14 23 Jul Aug Sep Oct Nov Dec