Sure, there's 60 minutes, but there are all sorts of rules about when the clock runs and when it doesn't. Much different than basketball and hockey, which don't have the problem of running over.
explain that one. hockey and basketball both have timeouts. i don't watch much basketball, but i can tell you hockey indeed will mess with the clock. in a recent game, a faceoff was set with 0.5 seconds left in the period. the refs bumped it up to 1.5 seconds to allow the possibility of a play after the puck drop. and hockey runs over all the time, we call it overtime (imagine that). when overtime doesn't solve it, there's a shootout. in the regular season overtime is 5 regulation minutes, while during the playoffs it's a full 20 minute period. overtime is sudden death, so there's no predicting exactly when it will end.
most people don't know jack shit about hockey.
Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition. - Isaac Asimov