7 instances from 3 years 2019 - 1 instance Jan Feb 27 Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 5 instances Jan 7 Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 04:26:58 11:32:02 19:57:31 22 Jul Aug Sep Oct Nov Dec 2017 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 25