18 instances from 4 years 2020 - 4 instances Jan 18 Feb Mar Apr May Jun 29 Jul Aug Sep Oct Nov 12 13 Dec 2019 - 3 instances Jan Feb Mar Apr May Jun 27 Jul 20 Aug Sep Oct 26 Nov Dec 2018 - 5 instances Jan 8 11 Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:47:19 11:22:30 19:48:46 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan 10 Feb Mar Apr May Jun 22 23 Jul Aug Sep Oct 3 Nov Dec 25 27