21 instances from 6 years 2021 - 1 instance Jan Feb Mar Apr May Jun 27 Jul Aug Sep Oct Nov Dec 2020 - 4 instances Jan 22 Feb Mar Apr May Jun 28 Jul Aug Sep Oct Nov 13 19 Dec 2019 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct 26 Nov Dec 2018 - 6 instances Jan 1 4 4 Jan 4, 2018 4 instances 21:28:16 21:28:58 21:32:59 21:34:55 5 Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2017 - 7 instances Jan 6 Feb Mar Apr May Jun 23 Jul Aug 29 4 Aug 29, 2017 4 instances 15:41:10 16:16:22 16:19:18 17:15:44 Sep Oct 10 Nov Dec 2016 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 29