18 instances from 3 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 4 Jun 21, 2018 4 instances 19:46:04 19:54:14 20:00:15 20:04:39 22 23 3 Jun 23, 2018 3 instances 07:54:07 08:52:26 08:55:39 Jul Aug Sep Oct Nov Dec 2017 - 9 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2017 4 instances 12:01:15 12:23:34 12:40:20 12:51:23 22 Jul Aug Sep Oct 2 3 Nov Dec 25 26