How Long Until Tomorrow?
The hours, minutes and seconds left until midnight.
Runs entirely in your browser
Loading the tool…
- —Days total
- —Working days
- —Weeks
- —Hours
- —Minutes
The date is in the link itself, so it works for anyone who opens it.
The count above runs to midnight tonight in your own time zone, the moment today becomes tomorrow. It is the same question as how long until midnight, and the same answer: the two are one instant, and this page counts to it in hours, minutes and seconds.
Tomorrow is not twenty-four hours away. It is however much of today is left, which is the whole of the difference between this page and adding a day to the clock. At nine in the morning tomorrow is fifteen hours off; at eleven at night it is one. The only moment the two answers agree is midnight itself.
It is not always twenty-four hours long either. On the night the clocks go forward the gap to the following midnight is twenty-three hours, and on the night they go back it is twenty-five. The count is worked out from your device's calendar rather than by adding hours, so it stays correct through both instead of drifting.
For a date further out than tomorrow, put it in the box, or open the countdown. For a fixed span rather than a moment, the timer counts down from a duration you set.
How to use it
- Read the count at the top: days, hours, minutes and seconds, moving as you watch.
- Look below it for the same span as whole days, weeks and working days.
- Change the date in the box to count down to anything else instead.
Questions
Why is this not always twenty-four hours?
Because tomorrow starts at midnight, not one day after whenever you happen to be reading. What is left is measured from now to the next midnight, so it shrinks through the day and is only a full twenty-four hours if you ask exactly as the day begins.
Does daylight saving change the answer?
Yes, on the two nights a year it happens. The gap to midnight is an hour shorter when the clocks go forward and an hour longer when they go back. The count reads the boundary from your device's own calendar, so it reports the real figure rather than a fixed twenty-four hours.
How many hours until midnight?
Whatever the count above says, which is the same number as the time until tomorrow because they are the same moment. It is worth stating because the two are usually asked for different reasons: midnight for a deadline that expires, tomorrow for a day that begins.
Which midnight does it use if I am travelling?
Whichever your device is currently set to. Change the time zone on the device and the count changes with it, because the boundary between today and tomorrow is a local one and there is no single worldwide midnight to count to.
How many hours is that, rather than days?
The count above is already in hours, minutes and seconds as well as days, and the figures below it give the whole span in each unit on its own. A day boundary is not a day of distance: at eight in the evening, tomorrow is four hours away rather than one day away, and it is the hours that decide whether something is worth starting tonight.
Which time zone is this counting in?
Yours, the one your device is set to. The target is midnight in your own local time rather than midnight UTC, because a question about a weekday is a question about the calendar on your wall. Someone reading this in another country sees their own answer, not a translation of anybody else's.
Does it keep counting while I leave the tab open?
Yes, it ticks once a second for as long as the page is open, and picks the count back up from the clock when you return to the tab. Nothing is stored between visits, so opening it again simply asks your clock what time it is now.
Is any of this sent anywhere?
No. The arithmetic runs in WebAssembly inside this tab, and the only thing it reads is your device clock. There is no account, no cookie of ours and no record of what you looked up. Load the page once and it keeps working with the network off.
The same question, other days
Each of these counts to the start of its own day, in your time zone, with the same live seconds and the same working days figure.
- How Long Until Monday
- How Long Until Tuesday
- How Long Until Wednesday
- How Long Until Thursday
- How Long Until Friday
- How Long Until Saturday
- How Long Until Sunday
- How Long Until Morning
- How Long Until the Weekend
- How Many Days Until Christmas
- How Many Days Until Halloween
- How Many Days Until Thanksgiving
- How Many Days Until New Year
Your data stays on your device
Everything above runs inside your browser as WebAssembly compiled from Rust. Nothing you type is uploaded, logged or stored on a server. You can load this page once, go offline, and it still works.
This page makes no requests at all, to anywhere. That is not a promise in the copy: it is a Content-Security-Policy header your browser enforces, and connect-src on it is none. Open the network tab and watch nothing happen.