24 Hour Timer

Summary

Click start for a 24-hour countdown you can adjust up or down, with presets for fasting and medication cycles, plus an alert when time runs out.

How it works

1. Click "Start" to begin the 24-hour countdown, or pick a preset first.
2. Use "-1h" and "+1h" to adjust the duration before starting.
3. Watch the ring shrink and the clock count down in hours, minutes, and seconds.
4. Click "Fullscreen" to project a large countdown on screen.
5. Hear a short beep and see the screen flash when it hits zero.
6. Click "Pause" at any time and "Resume" to continue from where you left off.

Use cases

• Track a 24-hour medication cycle and know exactly when the next dose is due.
• Time a 24-hour fast, or adjust to 16, 36, or 48 hours for other fasting windows.
• Count down to a full-day deadline like a submission window or auction close.
• Track a 24-hour on-call or standby period.
• Time a full day of travel, layover, or visa transit window.
• Run a 24-hour challenge, hackathon, or livestream countdown.
• Time a full-day equipment cooldown, charge cycle, or curing process.

Frequently Asked Questions