How to use the online alarm clock
Fifteen minutes is a popular length for a genuine power nap — long enough to feel like real rest, short enough to avoid falling into deep sleep and waking up groggy. It's also a common length for a short household task, like running a quick wash cycle check or letting something simmer.
It works well as a buffer before an appointment too — fifteen minutes to finish getting ready, or fifteen minutes before it's time to head out the door. Because it's just long enough to genuinely forget about once you're absorbed in something else, an alarm is far more reliable than watching the clock.
This preset sets an alarm for exactly fifteen minutes from now, calculated automatically the moment it's activated.
Common questions
Why is 15 minutes considered a good power nap length?
It's typically long enough to feel refreshing without dropping into deep sleep, which can leave you groggy on waking.