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 14:28:02 14:28:06 14:55:11 14:55:15 15:12:50 15:12:54 22 Jul Aug Sep Oct Nov Dec 2017 - 12 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 10:10:17 10:12:30 10:15:18 11:50:04 19:19:34 20:02:26 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 10:05:30 20:31:13 Nov 8 2 Nov 8, 2017 2 instances 16:07:16 16:07:19 Dec 25 2 Dec 25, 2017 2 instances 13:05:44 13:05:48