Time systems, calendar references, and timezone tools.

Event countdown

Countdown Timer — Days Until Your Event

Give your event a name and choose its date and local time. Watch the countdown in days, hours, minutes, and seconds—or start with the next New Year.

Enable JavaScript to set a countdown and watch it update.

How to set a countdown timer

Set the target to a departure time, the start of a celebration, or the moment a project goes live. The input follows your device’s time zone. To count down to an event in another country, first use the time zone converter to find the equivalent local time.

What happens when the countdown reaches zero?

When the target arrives, the timer stays at zero and displays a completion message. It does not play a sound or send a notification. Keep your device awake and the page open if you want to watch the final seconds. Choose Copy share link to get an address you can bookmark or send to someone else; opening it restores the event name and target time.

Sharing a countdown across time zones

A shared link stores the date and local time you typed, not an absolute instant. Someone in another time zone who opens it counts down to that wall-clock time in their own zone. That suits personal events such as “New Year’s Eve at midnight wherever you are”. For a single global moment, such as a product launch at 15:00 UTC, convert the time to each recipient’s zone first, or send the time with its UTC offset.

Calendar events beneath the timer

For a dedicated page with the next six dates, weekday counts, and background on each occasion, see the holiday countdowns. The reference list includes selected US holidays and common observances. It is a list of dates, not a complete public-holiday calendar. Some entries, such as Valentine’s Day and Halloween, are observances rather than federal days off. For business-day calculations, use the working-day counter and its explicit holiday setting.

Make the target unambiguous

Choose the actual start of your event

A countdown needs both a date and a time. Midnight at the start of Friday is different from the end of Friday. If the target input uses your device’s local zone, convert an overseas event into that zone first.

The days field counts complete 24-hour periods left in the interval. It is not an inclusive count of calendar dates. A countdown with 23 hours remaining can show zero full days even when the event is tomorrow.

Keep a countdown in perspective

A local calendar day can contain 23 or 25 elapsed hours around daylight-saving changes. The counter measures time until an instant, so its number of full days can differ from a simple date-only calculation.

The display depends on your system clock and the browser being able to run updates. It is a visual counter, not a background alarm, notification service, or guarantee that a sound will play when the target arrives.

Midnight means the beginning of the date

To count down to New Year, use January 1 at 00:00. December 31 at 00:00 is the beginning of New Year’s Eve, a full calendar date earlier.

A common mistake to avoid

Changing the device clock can change the countdown. For a date-only answer, use the date calculator instead.