18 instances from 2 years 2018 - 8 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2018 4 instances 19:44:20 19:53:39 19:58:30 20:02:55 22 23 3 Jun 23, 2018 3 instances 07:53:35 08:52:04 08:55:13 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 11:57:54 11:59:23 12:20:46 12:21:43 12:38:21 12:50:24 Jul Aug Sep Oct 2 3 Nov Dec 25 26