7 instances from 2 years 2018 - 6 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 01:19:46 01:19:54 01:26:59 01:27:07 01:28:11 01:28:17 Jul Aug Sep Oct Nov Dec 2017 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct 2 Nov Dec