19 instances from 4 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 07:25:12 07:25:15 07:25:16 07:32:41 07:32:45 16:03:32 24 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 03:36:39 03:36:49 03:37:02 03:37:13 03:37:27 03:37:37 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 04:04:57 04:05:07 Nov Dec 25 2 Dec 25, 2017 2 instances 05:39:27 05:39:30