11 instances from 2 years 2018 - 9 instances Jan Feb Mar Apr May Jun 21 22 23 24 Jul 6 5 Jul 6, 2018 5 instances 00:58:42 11:34:56 13:44:51 15:38:02 15:47:50 Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun 22 Jul Aug Sep 1 Oct Nov Dec