8 instances from 2 years 2018 - 6 instances Jan Feb Mar Apr May Jun 21 6 Jun 21, 2018 6 instances 01:50:50 01:51:00 01:51:09 01:51:19 01:51:40 01:51:49 Jul Aug Sep Oct Nov Dec 2017 - 2 instances Jan Feb Mar Apr May Jun Jul Aug Sep Oct 2 Nov Dec 25