47 instances from 9 years 2025 - 2 instances Jan Feb 25 Mar Apr May Jun Jul Aug 26 Sep Oct Nov Dec 2024 - 3 instances Jan Feb 19 Mar Apr May 28 Jun Jul Aug 28 Sep Oct Nov Dec 2023 - 4 instances Jan Feb 17 Mar Apr May 25 Jun Jul Aug Sep 1 Oct Nov 22 Dec 2022 - 4 instances Jan Feb 15 Mar Apr May 16 Jun Jul 18 Aug Sep Oct Nov 24 Dec 2021 - 6 instances Jan 1 Feb 16 1 Mar Apr May 18 Jun Jul Aug 13 Sep Oct Nov 15 Dec 2020 - 14 instances Jan 19 Feb 14 Mar Apr May 21 2 Jun 1 Jul 1 Aug 11 1 Sep 1 Oct 1 Nov 21 16 1 Dec 1 2019 - 9 instances Jan 26 Feb 1 Mar Apr 9 May 6 Jun Jul 13 Aug 8 Sep Oct 16 Nov 30 14 Dec 2018 - 4 instances Jan Feb 2 Mar Apr May 3 Jun Jul Aug Sep Oct Nov 14 Dec 17 2017 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 4 Dec