8 instances from 2 years 2019 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep 18 Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 07:13:53 07:13:55 07:13:57 07:20:28 07:20:31 20:50:09 22 Jul Aug Sep Oct Nov Dec