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 17:56:43 17:56:47 18:08:13 18:08:16 18:12:19 18:12:22 22 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 11:16:43 11:26:27 11:30:04 12:08:07 19:19:55 20:02:47 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 11:36:19 20:31:37 Nov Dec 25 2 Dec 25, 2017 2 instances 14:53:45 14:53:48