Countdown to a date
Days, hours, minutes and seconds to go
Pick any date. The example counts down to 25 December, and the link updates so you can share it.
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What it counts to
The countdown runs to the start of the date you pick: midnight (12:00 AM) at the beginning of that day, by your device's clock and time zone. It opens on the next 25 December.
Two figures
The headline counts calendar days. On 14 Nov, 25 Dec is 41 days away whatever the time of day. The row beneath is a live clock in days, hours, minutes and seconds to that midnight, so during the day it reads one day fewer than the headline, plus the hours left in today.
Sharing a countdown
The date is kept in the page address after a # sign, for example /countdown/#2026-12-25. Copy the link and anyone who opens it sees a countdown to the same date. It counts to midnight wherever the viewer is, so a friend in another time zone will see different hours. Browsers do not send the part after the # to the server; it stays on the device.
Past dates
Choose a date that has passed and the page counts up instead, showing the days since.
Accuracy
The figures come from your device's clock and are recalculated from it on every tick, so nothing drifts if the tab sits in the background. Leap days are counted automatically. If the clocks change for daylight saving before the date, the live row reflects the real hours remaining, which is why it may not be an exact multiple of 24 hours from the day count.