12 instances from 4 years 2021 - 1 instance Jan Feb Mar 20 Apr May Jun Jul Aug Sep Oct Nov Dec 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 4 instances Jan Feb Mar Apr May Jun 21 4 Jun 21, 2018 4 instances 06:50:19 06:50:31 06:55:41 20:40:39 Jul Aug Sep Oct Nov Dec 2017 - 6 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2017 3 instances 04:06:08 04:08:07 04:08:47 Jul Aug Sep Oct 2 Nov 8 Dec 25