8 instances from 2 years 2021 - 1 instance Jan Feb Mar 21 Apr May Jun Jul Aug Sep Oct Nov Dec 2018 - 7 instances Jan Feb Mar Apr May Jun 28 Jul 5 6 Jul 5, 2018 6 instances 06:08:20 06:08:23 06:55:55 06:55:58 10:19:30 10:19:33 Aug Sep Oct Nov Dec