Online Tool Store
Countdown to Multiple Time Zones
Enter an event's UTC date and time and see a live countdown across multiple time zones at once, useful for coordinating a global launch or meeting. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Example
Countdown to Multiple Time Zones
- Event
- Product launch
- Target (UTC)
- 2026-09-01 15:00
Example shown — replace it with your own event and time.
Countdown by zone
How it works
- Enter your event's date and time in UTC.
- Add the time zones you want to track.
- See a live countdown for each zone side by side.
The method
Each zone's local target time is derived by applying its current UTC offset (including daylight saving) to the event's UTC timestamp, then the countdown ticks down from the visitor's current time.
FAQ
How many time zones can I track at once?
Add as many as you need — each one shows its own countdown alongside its local clock time for the target moment.
Does it adjust for daylight saving time?
Yes — each zone's offset is calculated for the specific target date, so the countdown accounts for daylight saving shifts automatically.
What's this useful for?
Coordinating a product launch, live stream, or global meeting where attendees across regions need to know exactly when it starts in their own time.
How we compare
| Feature | Online Tool Store | Manual time zone conversion | World clock app |
|---|---|---|---|
| No app install | Yes | N/A | No |
| Multiple zones at once | Yes | One at a time | Varies |
| Free to use | Yes | Yes | Varies |
For coordinating one event across regions, this beats manually converting each attendee's time zone.