2 July 2012
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Forbes
There’s nothing like a slowdown in the earth’s rotation to ruin a
Saturday night. System administrators around the country were called
away from dinner dates and gaming sessions on Saturday after an extra
second was added to the evening by the world’s timekeepers, causing
widespread failure among computers that keep the world’s websites
online. Among the sites to have problems: Gawker, LinkedIn, Mozilla,
Reddit, StumbleUpon and Yelp, plus countless others. The addition of the so-called “leap second,” wasn’t a surprise. It was
scheduled months in advance by the timekeepers at the International
Earth Rotation and Reference Systems Service (IERS), whose job it is to
make sure the world’s clocks are properly set. The IERS created the leap
second in 1972 to keep atomic time aligned with solar time. Since then
25 leap seconds have been added to attomic clocks. The last leap second
was added December 31, 2008. At first, leap seconds weren’t a problem.
Computers accomodated them by setting their clocks backwards by one
second at the end of the day. But growth of the web, and the rise of
global Internet companies, made synchronization more crucial.
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