24 AlarmClock24
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SET ALARM FOR 13:45

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Current Time

Quick Presets

Your Alarms

    You don't have any alarms yet.

    You've landed on the page to set an alarm for 13:45. The widget above already has the time loaded. All you need to do is pick the sound you like, test it with the "Test sound" button, add a label if you want, and press "Set alarm". That's it.

    How to set the alarm for 13:45

    1. Pick the sound you like in the selector above. You have 10 options, from classic beeps to soft piano. Press "Test sound" to preview it.
    2. Add a label (optional) to identify the alarm: "Work", "Medication", "Pick up the kids"…
    3. Press "Set alarm". The alarm will appear in your list with a live countdown. When the time comes, it rings even if the tab is in the background.

    Why set an alarm for 13:45?

    In the afternoon, alarms remind you of school pickup, an extracurricular class, or that pending call you keep postponing. Setting an alarm at 13:45 with a label removes the mental load of constantly checking the clock.

    Frequently asked questions

    Does it work without an internet connection?

    Yes, once the page has loaded, the alarm works completely offline. The clock uses your device's local time and the sounds are generated with the browser's Web Audio API.

    How long should a nap last?

    Between 10 and 20 minutes is ideal to recover alertness without entering deep sleep. NASA recommends exactly 20 minutes. If you sleep more than 30 minutes, you wake up with sleep inertia and feel worse for a while.

    What is a coffee nap?

    You drink a coffee, set an alarm for 20 minutes, and nap. When the alarm rings, the caffeine is starting to take effect. It is the perfect combination: light sleep clears adenosine and caffeine blocks the remaining receptors.