Math & Dates Countdown to a date
Count down live to any date and time, with days, hours, minutes and seconds, plus working days and the weekday it falls on.
Optional label.
Time until October 10, 2026
29
Days
4
Hours
43
Minutes
58
Seconds
- Total days
- 29.20
- Total hours
- 700.7
- Total minutes
- 42,044
- Full weeks
- 4
- Working days
- 21
- Falls on
- Saturday
The countdown runs against your device clock in local time. Working days exclude Saturdays and Sundays but not public holidays, which differ by country.
Ready. Runs locally on your device.
Your files stay on your device. The tool works directly in your browser, using your device to process your files. Nothing is sent to our servers, and we never receive, store, or see your files or figures.
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Cite this page
Reembun. (2026, July 28). Countdown to a date. https://reembun.com/countdown-timer
How to use it
Set the target
Pick the date, then the time of day it happens.
Name it
What is it? labels the countdown, so a screenshot or a shared page arrives with its own title.
Watch it run
Days, hours, minutes and seconds tick down live in your tab, with total days, full weeks and working days underneath for planning.
Copy the figures
Copy takes the remaining time as text you can paste into a message or a status update.
What it shows
A live countdown broken into days, hours, minutes and seconds, updating every second, plus several ways of expressing the same interval:
- Total days, hours and minutes
- Full weeks remaining
- Working days, excluding weekends
- The weekday the target date falls on
Entering a date in the past reverses it into a count-up.
Working days
The working-day figure walks the interval one day at a time and counts anything that is not a Saturday or Sunday. Walking is slower than a modular shortcut and correct for every interval, including those starting or ending on a weekend, where the shortcut is off by one surprisingly often.
Public holidays are not excluded, because there is no universal list. Between any two dates you will typically need to subtract:
| Country | Public holidays a year |
|---|---|
| Indonesia | 16-20, including joint leave days |
| United Kingdom | 8 in England and Wales |
| United States | 11 federal |
| Japan | 16 |
| Singapore | 11 |
Where it is useful
Project deadlines. The working-day count is usually the one that matters for planning, since a 30-day deadline is closer to 21 working days.
Launches and events. A live countdown is a different thing from a date difference, since watching it move is part of the point.
Notice periods and contract ends. Knowing the exact weekday a date falls on matters when a deadline landing on a Saturday effectively moves to the Friday before or the Monday after.
Visa and travel windows. Counting days against a 90-in-180 rule needs exact arithmetic, not an estimate.
Time zones and midnight
The countdown runs against your device clock in local time. A target of “1 January at 00:00” is midnight where you are.
This matters for anything coordinated across regions. A product launch at midnight UTC is 07:00 in Jakarta and 19:00 the previous day in Los Angeles. If the date has to mean the same instant everywhere, work out the local equivalent first with the timezone converter and enter that.
Leap years and daylight saving
Day counts here are exact calendar days, so leap years are handled automatically. The interval simply contains an extra day.
Daylight saving transitions make one day 23 hours and another 25. Because the countdown works from a timestamp difference rather than a day count, it stays accurate to the second across a transition, even though the number of hours in the interval will not be an exact multiple of 24.
Common questions
Does it keep counting if I leave the tab open?
Yes. It ticks once a second against your device clock for as long as the page is open. Because everything runs locally there is no server keeping time and no connection needed after the page has loaded.
Which time zone does it use?
Your device's local time zone. A date entered as 1 January at 00:00 means midnight where you are, not UTC. For coordinating across zones, the timezone converter is the better tool.
Are public holidays excluded from working days?
No. Working days here exclude Saturdays and Sundays only, because public holidays differ by country, by state and sometimes by industry. Subtract the ones that apply to you.
Can I count up from a past date?
Yes. Enter a date that has already passed and it counts elapsed time instead, which is useful for anniversaries or tracking how long a project has been running.
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