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 7 Jun 21, 2018 7 instances 07:31:46 07:31:49 07:31:54 07:31:57 07:40:11 07:40:15 20:53:52 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 03:45:22 03:45:33 03:47:34 03:47:44 03:48:20 03:48:30 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 04:13:09 04:13:20 Nov Dec 25 2 Dec 25, 2017 2 instances 05:46:45 05:46:48