This is how much time we spend watching March Madness

March 6, 2015, 4:45 PM UTC
NCAA Men's Final Four - Championship
ARLINGTON, TX - APRIL 07: The Connecticut Huskies celebrate with the trophy after defeating the Kentucky Wildcats 60-54 in the NCAA Men's Final Four Championship at AT&T Stadium on April 7, 2014 in Arlington, Texas. (Photo by Ronald Martinez/Getty Images)
Photograph by Ronald Martinez — Getty Images

Last year, people spent 664 million hours watching the March Madness tournament live on TV and streaming on various devices, according to an estimate Turner Sports compiled for Fortune.

That’s approximately 75.7 thousand years. Or, nearly 100 times what it took to construct the Empire State Building, 42 times what it took to build the world’s largest ship, and four times the number of cumulative hours spent watching spent watching the Gangam Style video.

How uncomfortable should that fact make us? Every year, job placement firm Challenger, Gray & Christmas makes a grim pronouncement about the dollars that will be lost on the tournament (last year it was $1.2 billion). But while the tournament likely does change the way we work, one Duke University professor has pointed out it probably doesn’t substantially impact how much we do of it. Most people just make up the lost time later. If streaming means leisure activities have crept into office hours, it certainly hasn’t kept pace with the creep of work emails into leisure time.

March Madness might make us happier, too. Even Challenger, Gray & Christmas admit it’s good for morale. But it still comes with a real opportunity cost, probably even more than we’re losing on all those office brackets.

This story is from the March 15, 2015 issue of Fortune.

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