15 minute timer for a buffer or a sprint
A 15 minute timer is a quarter hour you can see from across the room. Use it to end a meeting on time or to protect a short block of reading.
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Where a quarter hour helps
Fifteen minutes is long enough to do a real slice of work and short enough that a meeting cannot pretend it needs the rest of the afternoon. Start it when a call is supposed to end, and put the screen where everyone can see it. The last minutes become a shared fact instead of one person watching a clock and interrupting. It is also a good reading sprint: one chapter, no new tabs, stop when the digits stop. A power nap should stay under this length for most people, and a visible countdown is a kinder alarm than a phone buried under a cushion. Practice a talk by running the opening once. Quiz a class and collect the papers when it ends. This page starts at fifteen minutes. You can still type another length, add a minute, or jump to the 10 or 25 minute pages if the block is the wrong size. Leave it fullscreen on a second display so the laptop you are working on stays free. The chime is there for the moment you look away, and the digits are there for the moments you do not need a sound at all.
FAQ
Can I use fifteen minutes to end a meeting?
Yes. Start it when the meeting should wrap up, not when it begins, unless the whole meeting is a quarter hour. A shared screen is more neutral than one person saying they have to go. Pause it if the group agrees to continue, and reset when the next item starts.
Is fifteen minutes a good nap timer?
It is a ceiling more than a target. Many people set a shorter nap and use fifteen as the latest they want to be woken. Keep the device awake and the volume high enough to hear from the sofa. A locked phone will not ring. This page only rings while it is open.