18 instances from 3 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 7 Jun 21, 2018 7 instances 04:41:23 04:41:26 04:41:28 04:41:31 04:43:08 04:43:11 19:56:10 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 03:19:26 03:19:45 03:22:39 03:23:21 03:23:40 03:26:23 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 15:11:52 15:12:02 Nov Dec 25 2 Dec 25, 2017 2 instances 19:13:22 19:13:26