15 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:15:30 03:15:30 03:15:30 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 6 Nov Dec 29 2016 - 10 instances Jan Feb Mar Apr May Jun 20 4 Jun 20, 2016 4 instances 18:02:30 20:18:02 20:34:02 21:49:03 Jul Aug Sep 19 4 Sep 19, 2016 4 instances 11:31:33 11:31:43 11:35:04 11:35:08 30 Oct Nov Dec 29