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 7 Jun 21, 2018 7 instances 07:48:07 07:48:11 07:49:00 07:49:03 07:56:31 07:56:34 20:58:15 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 03:52:03 03:52:13 03:54:10 03:54:20 03:54:46 03:54:56 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 04:20:21 04:20:31 Nov Dec 25 2 Dec 25, 2017 2 instances 06:40:49 06:40:53