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 6 Jun 21, 2018 6 instances 16:03:17 16:03:20 16:15:28 16:15:32 16:19:07 16:19:11 22 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 11:06:47 11:13:37 11:23:18 12:06:52 19:19:24 20:02:16 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 11:03:37 20:30:57 Nov Dec 25 2 Dec 25, 2017 2 instances 14:09:45 14:09:48