15 instances from 4 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2020 - 1 instance Jan Feb Mar Apr May Jun Jul 24 Aug Sep Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 07:29:28 07:29:30 07:29:31 07:37:33 07:37:37 15:55:48 24 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan Feb Mar Apr May Jun 23 24 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 04:10:45 04:10:55 Nov Dec 25 2 Dec 25, 2017 2 instances 05:44:12 05:44:15