21 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 14:28:30 14:28:33 14:55:38 14:55:42 15:13:18 15:13:21 22 Jul Aug Sep Oct Nov Dec 2017 - 12 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 10:10:38 10:12:57 10:15:38 11:50:11 19:19:37 20:02:29 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 10:05:51 20:31:16 Nov 8 2 Nov 8, 2017 2 instances 16:08:15 16:08:17 Dec 25 2 Dec 25, 2017 2 instances 13:06:11 13:06:14