5 instances from 3 years 2018 - 3 instances Jan Feb Mar Apr May Jun 21 3 Jun 21, 2018 3 instances 03:42:34 03:43:18 03:44:16 Jul Aug Sep Oct Nov Dec 2016 - 1 instance Jan Feb Mar Apr May Jun 20 Jul Aug Sep Oct Nov Dec 2015 - 1 instance Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 18