Leap Second on 30th June 2015 and effects on CentOS and RHEL

At 11:59 p.m. on June 30, clocks will count up all the way to 60 seconds. That will allow the Earth's spin to catch up with atomic time.

Background - http://www.usatoday.com/story/tech/2015/01/08/computer-chaos-feares/21433363/

All of Red Hat Enterprise Linux 4, 5, 6 & 7 will be affected.

*Resolve Leap Second Issues in Red Hat Enterprise Linux
https://access.redhat.com/articles/15145

*Are we susceptible to a leap second event?
https://access.redhat.com/articles/199563

*Labs: Leap Second Issue Detector
https://access.redhat.com/labs/leapsecond/