This is why your alarm clock always lets you snooze for up to 9 minutes at a time

Are you a real snooze, and do you hit the snooze button a few times each morning before you finally have the courage to get out of bed? You may have the idea that the snooze alarm wakes you up almost every minute, but in reality that’s always a fixed number of minutes. Yes, every alarm clock with snooze function (digital, analog and smartphone) always wakes you up after 9 minutes. But why is it a strange and strange number and not just 10 minutes? There is a simple reason for that.

10 minutes was technically impossible

10 minutes is indeed a more logical choice, but in the 1950s it was technically impossible to set the time to exactly 10 minutes. Therefore, due to the mechanisms in place, 9 minutes or a little more than 10 minutes had to be chosen. To build a safe margin, they picked 9 minutes and a few. Today’s digital alarms are a little more accurate, but still close to 9 minutes.

9 minutes is the norm

A few years later, analog alarms still popped up where you could manually set the snooze time to 5, 7 or 10 minutes, but even then 9 minutes remained the norm. 9 minutes was also selected as snooze time for digital alarm clocks. But this was for another reason, which is that it is cheaper to produce. Two numbers at snooze time will require more electronics. As a result, most people are used to those nine minutes that the alarm clocks kept on their smartphones this time too.

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