How it's calculated
days = ⌊(target − now) ÷ 1 day⌋
target = chosen date and time, now = current moment. Also broken into weeks, hours, minutes and seconds; counts up if the date has already passed.
Common questions
Can I count down to a specific time, not just a date?
Yes. Add a time to the target and the countdown will tick to that exact moment instead of midnight.
Does the countdown update on its own?
Yes. It refreshes every second so the seconds tick down live while the page is open.