12 instances from 3 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 8 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 20:30:32 20:44:18 20:45:40 22 3 Jun 22, 2018 3 instances 04:47:42 11:19:34 11:31:44 23 Jul 7 Aug Sep Oct Nov Dec 2017 - 3 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 2 Nov Dec 25 26