12 Hour Timer
Twelve hours, running long.
12 Hour Timer ready. Press start to begin.
Each mark is 15 minutes
Twelve hours is half a day — a long shift, an overnight prove, or the gap between doses. At this length you want the reminder somewhere more durable than a browser tab.
What 12 hours is good for
An overnight wait
A ferment, a soak, or a charge that finishes while you are asleep.
A long shift
Half a day with a visible end.
Questions
Will it survive the tab being closed?
No. The countdown lives in the page, so closing the tab ends it. For twelve hours, use a phone alarm — this page is better as a visible marker than as the thing you rely on.
Will it make a sound when it finishes?
Yes — an alarm rings when the countdown reaches zero. The countdown also turns red and the tab title changes to "Time's up", so the end is visible as well as audible.
The hard part isn’t the timer
This page counts down, and that is all it does. Porotimer handles the part that decides whether the session actually works.

Lock away what breaks focus
Choose the apps you're allowed for the session. Porotimer puts everything else behind a wall until the timer ends — which is the one thing a page in a browser tab can never do.
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Breaks that actually rest you
A calm scene and a breathing guide when the sprint ends, instead of five minutes of scrolling. You come back settled rather than scattered.
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See where the hours went
Every sprint and break laid out in order. The day becomes something you can look back on, rather than something you try to remember.
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