20 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 07:55:15 07:55:18 07:56:07 07:56:11 08:03:44 08:03:48 21:00:34 Jul Aug Sep Oct Nov Dec 2017 - 11 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 04:24:00 04:24:10 04:25:46 04:25:55 04:26:19 04:26:30 Jul Aug 28 Sep Oct 2 2 Oct 2, 2017 2 instances 05:09:28 05:09:38 Nov Dec 25 2 Dec 25, 2017 2 instances 06:51:00 06:51:03