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 16:02:04 16:02:08 16:14:15 16:14:19 16:17:54 16:17:58 22 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 10:10:58 10:13:18 10:15:59 11:50:17 19:22:36 20:05:27 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 11:02:02 20:34:28 Nov Dec 25 2 Dec 25, 2017 2 instances 14:08:31 14:08:35