16 instances from 2 years 2018 - 7 instances Jan Feb Mar Apr May Jun 22 4 Jun 22, 2018 4 instances 03:23:16 03:32:13 04:14:46 21:01:05 23 3 Jun 23, 2018 3 instances 07:09:40 07:17:26 07:19:24 Jul Aug Sep Oct Nov Dec 2017 - 9 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2017 3 instances 14:51:55 15:22:50 15:34:29 22 2 Jun 22, 2017 2 instances 04:24:36 04:44:38 Jul Aug Sep Oct 2 3 Nov Dec 25 26