7 instances from 3 years 2020 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov 20 Dec 2018 - 4 instances Jan 8 Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 06:12:40 14:09:50 18:57:49 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 2 Nov Dec 26