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 07:25:25 07:25:26 07:25:29 07:32:55 07:32:58 16:03:28 24 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 03:36:25 03:36:36 03:36:49 03:36:59 03:37:14 03:37:24 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 04:05:24 04:05:34 Nov Dec 25 2 Dec 25, 2017 2 instances 05:39:14 05:39:17