8 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:42:12 03:42:56 03:43:54 Jul Aug Sep Oct Nov Dec 2017 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct 2 Nov Dec 2016 - 3 instances Jan Feb Mar Apr May Jun 20 3 Jun 20, 2016 3 instances 09:05:38 11:21:01 13:29:00 Jul Aug Sep Oct Nov Dec 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 18