Countdown Dashboard
Add event dates in browser local time or UTC and compare their live countdowns side by side.
Temporary, in-memory events only. No notifications. Local repeated daylight-saving times use the earlier occurrence; select UTC for an unambiguous time.
No events yet. Add a date to start.
A QUICK WALKTHROUGH
How to use this tool
- Enter an event name, date, time, and time basis.
- Add more events to the dashboard.
- Remove an event or clear the dashboard when finished.
Explicit date semantics
Local time uses the browser timezone. Invalid or nonexistent daylight-saving times are rejected; repeated local times use the earlier occurrence. UTC avoids daylight-saving ambiguity.
Temporary dashboard
Events stay in memory only, with a limit of 20. Reloading or closing the page clears them. Past targets are shown as reached.
No reminders
There are no sounds, notifications, or background reminders. Display updates pause while the page is hidden and catch up when visible.
GOOD TO KNOW
Common questions
Can I use different timezones?
Each event supports the browser local timezone or UTC. Other named timezones are not supported.
Are events saved?
No. Events exist only in this page until removed, cleared, reloaded, or closed.