15 instances from 2 years 2018 - 8 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 18:17:10 18:28:23 18:32:25 22 4 Jun 22, 2018 4 instances 04:01:08 16:47:24 17:29:42 17:37:48 23 Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan Feb Mar Apr May Jun 22 2 Jun 22, 2017 2 instances 11:55:54 12:30:06 23 Jul Aug Sep Oct 2 3 Nov Dec 25 2 Dec 25, 2017 2 instances 15:07:11 15:22:52