24 Hour Timer

A 24 hour online countdown timer for daily streaks, deadlines exactly one day away, longer fasts, and "come back to this in a day" reminders.

Countdown timer

Quick utility for focus sprints or breaks — runs in the browser.

Channels
Browser (off)
Remaining
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Twenty-four hours is the unit of a day. It is also the most-used "come back later" interval — a deadline a day out, a 24-hour fast, a streak that rolls over at the same time tomorrow, the soak time on a marinated dish, the cooldown on a do-not-disturb policy. This page sets a 24-hour timer that runs entirely on the server. The countdown survives restarts, tab closes, screen locks, and device switches; nothing on the device itself matters until the notification arrives. Press start, label the block ("deadline", "fast end", "streak rollover", "marinade") and pick a channel — Telegram, browser push, or email — and the alert reaches you exactly 24 hours later. For a recurring daily routine — daily streak, daily fast, daily deadline at the same time — save the timer as a daily recurring reminder and it queues automatically every day, so you never have to come back to this page. For shorter intervals, the 8-hour timer covers a workday or sleep cycle; for longer, just stack two 24-hour timers.

FAQ

Will the 24-hour timer survive my laptop sleeping or restarting?
Yes. The countdown is scheduled entirely on the server, so no client-side state — tab, browser, device, or network — matters until the notification fires.
Can I use it for intermittent fasting?
Yes — set it when the fast starts and the notification arrives when 24 hours are up. For repeating fasts at the same time, save as a daily recurring reminder.
Can I use it as a daily streak?
Yes. Save the timer as a daily recurring reminder; the streak rollover notification arrives at the same time every day.
Can I label the 24-hour timer?
Yes. Type a short label like "deadline" or "fast end" before pressing Start, and the notification will include that label.

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