20 instances from 8 years 2023 - 1 instance Jan Feb Mar Apr May 17 Jun Jul Aug Sep Oct Nov Dec 2022 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct 1 Nov Dec 2021 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 5 Dec 2020 - 1 instance Jan 23 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 12 26 Nov Dec 2017 - 10 instances Jan Feb Mar Apr May Jun 21 Jul Aug Sep 13 2 Sep 13, 2017 2 instances 15:30:37 15:32:26 14 4 Sep 14, 2017 4 instances 16:15:28 16:27:00 16:39:32 17:00:35 25 Oct Nov 8 2 Nov 8, 2017 2 instances 09:16:24 11:32:36 Dec 2016 - 3 instances Jan Feb Mar Apr May Jun Jul Aug Sep 20 30 Oct Nov Dec 29 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 16