Countdown to a Date and Time

Count down to any date, time and time zone, and share the exact moment with a link. Shows days, hours, minutes and seconds, handles daylight-saving changes, and can run on a big screen.

Free calculator · No sign-up · Your work stays in this browser

Days

Hours

Minutes

Seconds

Date and timeTime zoneLabel (optional)

Run this on a big screen

Count down to an exact moment

Enter the local date and time of the event and the time zone it happens in. The counter shows whole days, hours, minutes and seconds left, and the address bar updates so you can copy the link at any time. Your last settings are kept in this browser; opening someone else's link replaces them with theirs.

Why the time zone matters

“Friday at 9:00” means different instants in different places. Because the zone is part of the link, a global audience sees one agreed moment instead of doing sums. If you are coordinating people across regions, the timezone event planner on this site shows the same time in several cities at once.

Counting versus running an event

A date countdown is for waiting. When the event starts, you usually need segments, speaker timers and messages on a stage display. That is what TimedFlow rooms are for, and the button below the counter takes you there.

Frequently asked questions

How do I share a countdown?

Set the date, time, time zone and an optional label, then choose "Copy shareable link". The link stores them as ?to=, ?tz= and ?label= in the address, and anyone who opens it sees the same moment counting down, whatever time zone they are in.

Does it handle daylight saving time?

Yes. The target is turned into one exact instant using the time zone you picked, and the remaining time is the true difference between now and then. If clocks change in between, the days still add up correctly. A wall time that does not exist (for example 02:30 on the spring-forward day in New York) is read as the next valid time, and a time that happens twice is read as its first occurrence.

Why does the countdown show a different time zone than mine?

You choose the zone the event happens in, so a launch at 9:00 in Tokyo counts down to the same instant for everyone. The line under the numbers spells out the date and the zone, so there is no doubt which one is meant.

What happens when it reaches zero?

The numbers are replaced by "Time is up", and the browser tab title changes to match. The tab title also shows the remaining time while counting, so you can watch it from another tab.

Can I show it on a big screen?

For a quick display, open this page on the screen and use the browser's full-screen mode. For an event, "Run this on a big screen" opens a TimedFlow room, where you control the timer from a phone and show it on any screen, with no sign-up needed to start.

Take the plan into the live room

TimedFlow turns this planning work into a remote-controlled timer for presenters and viewers.

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