8 instances from 3 years 2020 - 2 instances Jan 20 Feb Mar Apr May Jun Jul 1 Aug Sep Oct Nov Dec 2018 - 5 instances Jan 6 Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 04:51:16 13:26:34 18:14:31 22 Jul Aug Sep Oct Nov Dec 2017 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 26