8 instances from 2 years 2020 - 1 instance Jan Feb Mar Apr May Jun 28 Jul Aug Sep Oct Nov Dec 2016 - 7 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 11:19:17 12:08:50 12:48:27 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 13:19:55 13:30:01 13:38:17 13:40:06 Oct Nov Dec