15 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 06:46:51 06:47:21 06:52:33 13:41:12 14:09:18 14:27:01 20:39:18 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 04:40:33 04:40:44 Nov 8 2 Nov 8, 2017 2 instances 16:09:01 16:09:03 Dec 25 2 Dec 25, 2017 2 instances 06:00:25 12:17:47