10 instances from 4 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:52:36 03:53:29 03:54:43 Jul Aug Sep Oct Nov Dec 2017 - 4 instances Jan Feb Mar Apr May Jun 21 2 Jun 21, 2017 2 instances 21:08:03 21:08:03 Jul Aug Sep Oct 2 Nov Dec 25 2016 - 2 instances Jan Feb Mar Apr May Jun 20 Jul Aug Sep Oct 3 Nov Dec 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 18