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 07:48:21 07:48:24 07:49:14 07:49:17 07:56:48 07:56:51 20:58:19 Jul Aug Sep Oct Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2017 6 instances 03:52:16 03:52:26 03:54:23 03:54:33 03:54:59 03:55:09 Jul Aug Sep Oct 2 2 Oct 2, 2017 2 instances 04:20:34 04:20:44 Nov Dec 25 2 Dec 25, 2017 2 instances 06:41:03 06:41:06